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Plant of the Month: September 2018

Handflower Tree or Monkey's-hand Tree
Chiranthodendron pentadactylon Larréat.
= Chiranthodendron platanoides (Bonpl.) Baill.
MALVACEÆ ; Mallow Family

Its ten-syllable scientific name is a big mouthful, so the tree is better known by common names. Other names for this S Mexican, Guatemalan tree include: Devil's-hand. Mexican Hand-tree or Plant. Tree-of-the-Little-Hands.
    It is a frost-tender evergreen tree, celebrated for its curious hand-like flowers borne in summer. The genus is related closely to and hybridizes with Fremontodendron, my plant-of-the-month for February 2010. The two genera hybridize, and below I show a picture of the bigeneric cross Chiranthofremontia Lenzii.
    The tree can grow rapidly to 100 feet tall, its trunk to 6 feet thick. The leaves are soft, to 12 inches long, 5-lobed mostly; held on long stems. They are dark green and scarcely hairy on top, but pale whitish-brown with thick hairs beneath. The flowers are red and brown, to 2 inches long, and bat-pollinated. "In the different stages of its progress, the flower appears first like a shut hand, and then an open one" due to the bright red 5 fingerlike anthers and thumblike style. Seedpods are fuzz-covered, and woody, 3 to 6 inches long.
    Handflower Tree not mentioned in houseplant books, but is suited ideally for cool conservatories.
    Regarding edibility, Nicholas Hellmuth of Maya-Ethnobotany.org, reported the flowers were a well known flavoring for cacao of the 16th century Aztec, and that the leaves are used to wrap tamales, but seemingly more than just to wrap them, to also impart a flavor. "Actually the leaves themselves can evidently be eaten."
    Mature tree leaves are too dense with chewy hairs, to be eaten. However, tender leaves of very young seedlings have few hairs, taste bland, are mucilaginous, and the hairs non-irritating. No worse than eating the skin of a peach. If a less-hairy cultivar were cloned it may make a good perennial vegetable.
    The photographs below show a young plant (partly eaten), and flowers and leaves of mature trees, and the hybrid.

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<i>Chiranthodendron</i>

Chiranthodendron flower; photo by ALJ

<i>Chiranthodendron</i>

Chiranthodendron mature tree leaves ; photo by ALJ

<i>Chiranthodendron</i>

Chiranthodendron seedling tree leaf underside ; photo by ALJ

<i>Chiranthodendron</i>

Chiranthodendron potted seedling, eaten partly ; photo by ALJ

<i>Chiranthofremontia Lenzii</i>

Chiranthofremontia Lenzii flowers and foliage ; photo by ALJ




   
Arthur Lee Jacobson plant expert
Arthur Lee Jacobson plant expert
Arthur Lee Jacobson plant expert
Arthur Lee Jacobson plant expert
Arthur Lee Jacobson plant expert
Arthur Lee Jacobson plant expert
Arthur Lee Jacobson plant expert
Arthur Lee Jacobson plant expert
Arthur Lee Jacobson plant expert
Arthur Lee Jacobson plant expert
Arthur Lee Jacobson plant expert
Arthur Lee Jacobson plant expert
Arthur Lee Jacobson plant expert
   

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