Arizema Watta ( Latin: Arisaema wattii ) is a perennial herbaceous tuberous plant, a species of the genus Arizema ( Arisaema ) of the Aroidae family .
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Arisaema wattii Hook.f. , 1893 | |||||||||||||||||||||||||
The species is named after the botanist David Watt ( born David Allan Poe Watt , 1830-1917) [2] .
Content
Botanical Description
Dioecious plants.
The tuber is compressed spherical, 2.3-5 cm in diameter.
Leaves
Three or four cataphillas, green or violet, with purple spots, 15–20 cm long, blunt or sharp at the apex.
There are two leaves . Petioles are yellow-green with dark brown spots, consisting of thin stripes, up to 60 cm long, nested about 1 ⁄ 3-1 in the vagina , forming a false stalk . The leaf blade consists of three leaflets; green leaves, sessile; the central leaf is elliptic, 15-30 cm long, 4-10 cm wide, tapered at the base, pointed at the apex; lateral leaflets oval, oblique, longer than central, at the base ear-shaped, rounded at the apex, narrow-wedge-shaped on the inside.
Inflorescences and flowers
The inflorescence appears before the leaves. Pedicel is equal in length to petioles. The coverlet is purple-brown or purple-green, 11-13 cm long; the tube is cylindrical, 4.5-6.5 cm long and 1-2 cm in diameter, the edges of the aperture are ear-shaped 1.5-2.5 cm wide; the plate is widely oval, 6-7 cm long, 3.5-5 cm wide, slightly compressed at the base, short-pointed at the apex.
The cob is same-sex. The female zone is conical, 1.5-2 cm long and about 1 cm in diameter; ovate ovary ; ovule four, basal; the column is short; disk-shaped stigma ; male zone 1.5-3 cm long; sinandria weak; two anthers , on a short stalk, purple, opened by the apical pore. The appendage is vertical, whitish-green, cylindrical, 2.5-4.5 cm long, 4.5-5 mm in diameter, truncated at the base, 5-7 mm long on the stalk, slightly compressed in the middle, dull on the apex.
It blooms in April - May.
Fruits
Fruits - red ovoid berries , with four seeds.
Seeds are ovoid.
Fruits in June - September.
Distribution
It is found in India ( Assam ), China ( Yunnan ) and Myanmar [3] .
It grows in mixed forests , evergreen forests, on grassy slopes; at an altitude of 2100 to 3300 m above sea level.
Notes
- ↑ For the conventionality of indicating the class of monocotyledons as a superior taxon for the plant group described in this article, see the APG Systems section of the Monocotyledonous article .
- ↑ David Allan Poe Watt personal page on the IPNI website (Retrieved December 4, 2010)
- ↑ According to Royal Kew Botanical Gardens , UK. See the links section.
Literature
- Hen (g) Li, Guang Hua Zhu, Boyce PC, Murata J., Hetterscheid WLA, Bogner J., Jacobsen N. Araceae in Flora of China. - 2010 .-- S. 56.
Links
- Arisaema wattii at the Kew Royal Botanic Gardens database, UK (Retrieved December 4, 2010)
- Arisaema wattii (unreachable link) // www.cate-araceae.org (Retrieved December 4, 2010)