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Description
philodendron heterocraspedon mature Philodendron heterocraspedon – Long Ribbed, Scalloped LeavesPhilodendron heterocraspedon Croat and D. C. Bay rare South American climbing aroid with elongated, veined foliage Philodendron heterocraspedon Croat and D. C. Bay is a scarce canopy climbing aroid from the rainforests of Colombia and Ecuador. Described in Aroideana (2006), it is recognised for its long, slightly undulating leaves with deeply impressed primary veins. In cultivation, this species responds to firm vertical support, bright filtered
Philodendron heterocraspedon Croat and D.C.Bay – rare South American climbing aroid with elongated, veined foliage
Philodendron heterocraspedon Croat and D.C.Bay is a scarce canopy-climbing aroid from the rainforests of Colombia and Ecuador. Described in Aroideana (2006), it is recognised for its long, slightly undulating leaves with deeply impressed primary veins. In cultivation, this species responds to firm vertical support, bright filtered light, and stable humidity with increasingly dramatic, well-textured foliage.
What makes Philodendron heterocraspedon unique
- Leaf form: Elongated blades with a smooth matte-gloss finish, undulating margins, and distinct venation.
- Climbing habit: Anchors to fibrous or moss-covered supports via aerial roots for vertical growth.
- Ontogeny: Juvenile leaves are narrower with simpler form; mature foliage develops greater width, stronger venation, and margin undulation.
- Collector appeal: Rarely seen in cultivation, valued for its upright growth and leaf architecture.
From South America’s canopy to your collection
Native to wet lowland and lower montane forests in Colombia and Ecuador, typically between 100 – 800 m elevation. P. heterocraspedon climbs large tree trunks in filtered to low canopy light, benefiting from constant moisture, warm temperatures, and moving air. In situ, its leaves are adapted to intercept dappled sunlight while minimising water loss.
How Philodendron heterocraspedon differs from similar narrow-leaf species
Compared to Philodendron elongatum, heterocraspedon shows more pronounced primary venation and slightly more undulate leaf margins. Unlike P. atabapoense, it lacks the pronounced bicolour contrast between the adaxial (upper) and abaxial (lower) leaf surfaces. It can resemble juvenile P. pedatum, but heterocraspedon maintains a narrower, more elongated blade shape into maturity.
Size and form at dispatch
- Pot size: 12 – 15 cm nursery pot
- Approximate height: 25 – 40 cm excluding support
- Leaf count: Typically 4 – 7 leaves; size varies with growth stage
Images may depict mature plants. Shipped specimens may have smaller juvenile leaves; with strong light, humidity, and a firm pole, foliage will gradually increase in size and complexity. Newly shipped plants may pause growth temporarily while acclimating.
Care guide – keeping Philodendron heterocraspedon thriving
- Light: Bright, indirect light encourages compact internodes and strong venation; avoid harsh midday sun.
- Water: Water when the top 2 – 3 cm of substrate are dry; fully saturate, then allow excess to drain.
- Humidity: Best above 60%; stable high humidity supports larger leaves and better texture.
- Temperature: Ideal 18 – 28 °C; avoid prolonged drops below 15 °C.
- Substrate: Airy aroid blend (~35% fine orchid bark, 25% coco coir, 20% perlite/pumice, 10% compost, 10% horticultural charcoal).
- Feeding: Balanced liquid fertiliser at 25 – 50% label rate every 4 – 6 weeks during active growth.
- Support: Moss or fibre poles provide texture for aerial root adhesion; secure the stem at each node.
Propagation and growth notes
- Propagation: Stem cuttings with at least one node and root nub; root in moist sphagnum, airy substrate, or semi-hydro with nutrient solution.
- Growth rate: Moderate; faster with bright light, warm temperatures, and regular feeding.
- Hydroponics: Adapts to semi-hydroponic systems if transitioned gradually.
Flowering and inflorescence
Mature plants produce a greenish to pale spathe enclosing a spadix, typical of Philodendron. While ornamental value is minor compared to foliage, flowering indoors is possible in stable, long-term culture.
Common issues and solutions
- Yellowing leaves: Usually linked to overwatering or compacted substrate; improve drainage and adjust watering frequency.
- Slow or stunted growth: Increase light (still indirect) and ensure firm pole contact at each node.
- Pests: Watch for thrips, spider mites, and mealybugs; treat promptly with targeted controls.
Science-based notes
- Venation function: Prominent primary veins facilitate water transport in long, narrow blades.
- Ontogeny: Morphological shift from narrow juvenile leaves to more textured mature blades occurs progressively with climbing height.
- Ecological role: Adds vertical structure in rainforest understories, offering microhabitats for invertebrates.
Etymology
Philodendron derives from Greek phílos (“loving”) and déndron (“tree”), referring to its climbing nature. The species epithet heterocraspedon comes from Greek for “different edge,” referencing variation in the leaf margins.
Order Philodendron heterocraspedon
Add Philodendron heterocraspedon to your collection for a rare canopy climber with elegant, elongated foliage. With stable humidity, bright filtered light, and firm support, this species will reward you with increasingly architectural leaves over time.
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4.3 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 5
Great book!
Format: Paperback, Format: Paperback
Great book. I really appreciate that it was written. It’s very interesting, informative and unfortunately the themes are very relevant at this time. Would definitely recommend the book to anyone interested.
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Reviewed in the United States on November 18, 2025
★★★★★ 5
Documents the influence of American Eugenics on the Holocaust
Format: Hardcover
American Court decisions, and what some call the genocide of Native Americans, was one major source of inspiration behind Nazi policy against both the Jews and people that the eugenic scientists considered inferior races. American policy also was very influential in inspiring the Nazi goal of lebensraum, expanding the Germanic population and reducing, and making slaves, of the Slavic peoples (Poles, Russians and other Eastern populations). Following Hitler's rise to power, Lebensraum became an ideological goal of Nazism and provided for them justification for the German territorial expansion into East-Central Europe. After all, the Americans decimated the naïve population of America so, the Nazis reasoned, how is that different from the decimation the native population of Eastern Europe? Some even referred to Ukrainians and other Slavic people as "Indians."
Reservations for Native Americans was a factor justifying the concentration camps for Jews, only a few of which were death camps, and this is one reason why the Nazis got away with the Holocaust for so long. It was not until after the war when the Soviets liberated the death camps that we knew for certain the extent of the genocide goal of the Nazis. The main extermination camps were Belzec, Sobibór and Treblinka, which served as "death factories." Auschwitz II–Birkenau was a combination concentration/extermination camp.
Anti-Semites, eugenicists and racists inspired by Darwinism in the U.S. helped inspire those in Germany, and vice versa. The US was “a global leader in ‘scientific’ eugenics,” so naturally the German scientists would have to rely on American research and law (page 8). The author covered only briefly the well-documented important influence of Darwin and mentioned evolution only in connection with the evolution of racism (p, 114). Conversely, the eugenics idea and movement was discussed 28 times, such as page 8 where the author documents that eugenics was the basis of both the Nazi Germany and American discrimination laws and policy.
The support of the U.S. to Nazi German went well beyond that. U.S. bankers and industry, even the weapons industry, invested heavily in the Nazis war machine. Nazis borrowed ideas from U.S. books, such as the 1916 American best seller racist book titled The Passing of the Great Race and other propaganda, such as that developed in World War I. The U.S. refused to admit significant numbers of Jewish refugees, such as in 1939 the United States refused to admit over 900 Jewish refugees who had sailed from Hamburg, Germany, on the St. Louis to the West. Denied permission to land in the United States, the ship was forced to return to Europe where many died in Nazi German camps. The most famous example is the State Department rejected Anne Frank's attempt to enter the United States (pages 53,116, 149).
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Reviewed in the United States on October 29, 2017
★★★★★ 4
Interesting and Informative
Format: Kindle
Interesting and informative. This is a book about German political leaders and how they perceived the United States, its culture and it’s laws. Although it touches on the American culture and legal system, it is mostly comprised of quotes from German writers, lawyers and politicians. It’s worth reading if you are interested in how the German goverment evolved the laws supporting the eventual persecution of its Jewish citizens.
This is a book about Germany and makes some high level generic observations on American Eugenics and Race Laws. It is informative and makes some interesting observations on our race laws, but if you’re more interested in the United States race law history, I would recommend something more focused the United States.
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Reviewed in the United States on November 1, 2023
★★★★★ 5
Much Better than its Title.
Format: Hardcover
The author, Professor of Comparative and Foreign Law at the Yale Law School, tells us in the Acknowledgments that Princeton U. Press received from some of its referees "suitably bilious responses", validating his decision to bypass commercial publishers. Still, James Q. Whitman assures us time and again that he has nothing nefarious in mind, that Hitler's extermination ideology was not made in the USA, as the title may suggest. Instead, he brings to light the keen scholarly interest nationalist and Nazi German jurists took in contemporary American race legislation and Jim Crow practices. By separating the racist dimension of the "American Legal Realism" of the 1930s from its larger liberal context, Whitman arrives at the true nexus with its German counterpart. The " 'realists' of both countries shared the same eagerness to smash the obstacles that 'formalistic' legal science put in the way of 'life' and politics - and 'life' in both New Deal America and Nazi Germany did not include only economic programs (...). 'Life' also involved racism." (p. 156) The author's familiarity with both, the German and American legal landscapes of the 1930s and 40s and his painstakingly sober analysis, assure this reader that the book is exactly NOT "spellbinding and haunting", as one dust-cover reviewer sees it.
The topic could be embedded in the larger history of the American eugenics movement, so carefully illuminated by Christine Rosen (Preaching Eugenics (Oxford, 2004) who cites this opinion of the great Oliver Wendell Holmes, abbreviated in our book: "It is better for all the world, if instead of waiting to execute degenerate offspring for crime, or to let them starve for their imbecility, society can prevent those who are manifestly unfit from continuing their kind. Three generations of imbeciles are enough." (p.150)
As contemporaries of the Trump era, we may want to stop and reflect on Whitman's somber conclusion "(...) To have a common-law system like that of America is to have a system in which the traditions of the law do indeed have litte power to ride herd on the demands of the politicians, and when the politics is bad, the law can be very bad indeed." (p.159) Professor Whitman summarizes his interpretation of recent literature that support his thesis as follows: "All of these works paint a darker picture of early twentieth-century American intellectual and political life than we might wish. So does this book." Makes it a timely one, doesn't it ?
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Reviewed in the United States on March 10, 2017
★★★★★ 5
Essential reading for a fuller and more accurate comprehension of American history
Format: Hardcover
I'm not in the habit of writing reviews, but I strongly recommend Hitler's American Model as critical reading for our political moment, especially given the conversations about racism, antisemitism, and white supremacy that the Trump administration and Charlottesville have bought to the fore. It's imperative that we understand the depth of racism integral to American policy making and execution. Numerous European countries recognized America as the world's leader in racist legislation, and American immigration, naturalization, and antimiscegenation law influenced the Nazi legislators who crafted the Nuremberg Laws. They did not import American legal policy and praxis wholecloth, but studied it deeply as a precedent for not just a race-based, but a racist, system of laws that privileged the "master race" over the inferior dilutors of that race--in the Nazi case, the Jews. American exclusion and criminalization of non-white people proffered a blueprint of inspiration to Nazi radicals, who engaged intimately with it in the hopes of carrying it out to its logical extent: an openly racist legal system that drove out the racially decrepit to foster a pure Aryan state.
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Reviewed in the United States on August 29, 2017
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