Apocynum pictum
| Apocynum pictum | |
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| Scientific illustration of Apocynum pictum (titled with synonym Apocynum hendersonii)[1] | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Gentianales |
| Family: | Apocynaceae |
| Genus: | Apocynum |
| Species: | A. pictum
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| Binomial name | |
| Apocynum pictum | |
| Synonyms[2] | |
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Apocynum pictum is a species of plant in the Apocynaceae family. It is native to China, Kazakhstan, Kyrgyzstan, Mongolia, and Tajikistan.[2] Alexander von Schrenk, the naturalist who first formally described the species, named it after colored (pictus in Latin) flowers.[3][4]
Description
[edit]It is a perennial herbaceous plant reaching 2 meters in height. Its young, light green branches are covered in soft hairs but become hairless with age. The oblong, egg-shaped, alternating leaves are 1.5–6 by 0.2–2.3 centimeters. The leaves are slightly rough. The tips of the leaves come to gradual tip, and the bases are wedge-shaped. The leaves' margins have dense, minute rounded teeth. Its petioles are 2–5 cm long. Its inflorescences occur at the ends of stems and branches. Each inflorescence has numerous flowers. Each flower is on a pedicel that is 4–5 millimeters long. The arched, recurved pedicels are densely covered in short, white hairs. The pedicels have lance-shaped bracts that are 2–3 millimeters long. Its flowers have oval to triangular sepals that are 1.5–4 millimeters long. Its petals form a basin-shaped tube that are 2.5–7 millimeters long with pink to purplish-red lobes that have distinct darker patterning. The lobes of the flower are triangular and come to a long, gradual point. Its narrow, pendulous, hairless fruit are 10–30 by 3–4 millimeters. The oval, brown seeds are 4–5 by 0.5–1 millimeters that are tufted with 1.5–2.5 centimeters long yellow hairs.[5][6][7]
Reproductive biology
[edit]The pollen of Apocynum pictum is shed as permanent tetrads.[8]
Distribution and habitat
[edit]It has been observed growing in sandy, silty soils along streams and rivers and at desert margins.[5]
Uses
[edit]It has been recorded as being used in central Asia as a textile fiber, and in Traditional Chinese Medicine as a tea for hypertension and hyperlipidemia.[5]
References
[edit]- ^ Henderson, George; Hume, Allan Octavian; Forsyth, Sir Thomas Douglas (1873). Lahore to Yārkand : incidents of the route and natural history of the countries traversed by the expedition of 1870, under T. D. Forsyth. London: L. Reeve. p. illustration. doi:10.5962/bhl.title.101652.
- ^ a b "Apocynum pictum Schrenk". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved July 11, 2023.
- ^ Stearn, William (2004). Botanical Latin. Portland, Ore. Newton Abbot: Timber Press David & Charles. ISBN 9780881926279.
- ^ Schrenk, A. (1844). "Plantae novae, nondum descriptae, quas in itinere ad fluvium Tschu versus legit Schrenk" [New plants, not yet described, which Schrenk collected on his way to the river Tschu]. Bulletin de la Classe Physico-Mathématique de l'Académie Impériale des Sciences de Saint-Pétersbourg (in Latin). 2: 115–116.
- ^ a b c Thevs, N; Zerbe, S.; Kyosev, Y.; Rozi, A.; Tang, B.; Abdusalih, N.; Novitskiy, Z. (2012). "Apocynum venetum L. and Apocynum pictum Schrenk (Apocynaceae) as multi-functional and multi-service plant species in Central Asia: a review on biology, ecology, and utilization". Journal of Applied Botany and Food Quality. 85: 159–167.
- ^ "Apocynum pictum Schrenk". eFloras. Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA. 2008. Retrieved July 11, 2023.
- ^ Shishkin, E.G.; Bobrov, E.G., eds. (1967). "Genus 1165. Poacynum Baill". Flora of the U.S.S.R. 18: 485–486.
- ^ Nilsson, Siwert; Endress, Mary E.; Grafström, Elisabeth (1993). "On the Relationship of the Apocynaceae and Periplocaceae". Grana. 32 (sup002): 3–20. doi:10.1080/00173139309428973. PMID 15664441.