Cecropia peltata

Cecropia peltata is a fast-growing tree in the genus Cecropia. Common names include trumpet tree and snakewood. It is listed as one of the world's 100 worst invasive alien species.

Cecropia peltata
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Rosales
Family: Urticaceae
Genus: Cecropia
Species:
C. peltata
Binomial name
Cecropia peltata
Linnaeus, 1759

Description

Cecropia peltata is a fast-growing tree,[1] normally reaching 15 metres (49 ft), but occasionally growing up to 25 metres (82 ft) tall. The leaves are large – 10–60 centimetres (4–24 in) in length and width, but more commonly about 20 × 20 centimetres (8 in) and palmately divided into 7–11 (but generally 8–10) lobed. The upper surfaces of the leaves are scaled, while the lower surfaces are covered with minute hair, interspersed with longer ones. The petioles are generally 20–50 centimetres (8–20 in) long, while the branches are green and covered with short, stiff hairs.[2]

Like other members of the genus, C. peltata is dioecious – there are separate male and female plants. Male flowers, which are 1–1.5 millimetres (0.039–0.059 in) long, are borne in spikes 10–60 centimetres (4–24 in) long. The male inflorescence is enclosed in a spathe which splits open and drops off once the anthers mature. The female flowers are borne in paired spikes 3–5 centimetres (1.2–2.0 in) long. The fruit, which is about 2 millimetres (0.079 in) long, is an achene which is enclosed in a fleshy jacket which forms from the perianth.[2]

Taxonomy

The species was described by Carl Linnaeus in the 1759 edition of Systema Naturae. It was the first species to be described in the genus and was originally applied to many species of Cecropia. As additional species were described, the usage narrowed. The genus was placed in the family Urticaceae by Adolf Engler in 1889. E. J. H. Corner suggested moving the genus to the Urticaceae in 1962, while Cornelis Berg placed Cecropia in its own family, the Cecropiaceae.[2] Based on molecular data, the Angiosperm Phylogeny Group merged the family back into the Urticaceae.[3]

Distribution

Cecropia peltata ranges from southern Mexico through Central America to northern South America, Guyana, Trinidad and Tobago, and Jamaica, and has been introduced in Africa, Asia and the Pacific.[2] The species has been listed as one of the hundred worst invasive alien species by the Invasive Species Specialist Group.[4] Replacement of its very close ecological analogue, the native African Musanga cecropioides, by C. peltata has been reported along major roads of Cameroon.[5]

gollark: The resistor behaves ohmically and the current through both things is the same.
gollark: IIRC, if we assume the LED is an ideal diode, it'll just always have a 2V potential difference across it (if there's more than 2V in the circuit and also it is the right way round oops).
gollark: Well, that would actually have been right if you used the right units then added 2, possibly.
gollark: Not just... multiply... them?
gollark: I'm pretty sure you'd have to work out what voltage across the resistor would give you 20mA through it, then add 2 to it for the LED.

References
  1. Coley, Phyllis D. (1986). "Costs and benefits of defense by tannins in a neotropical tree". Oecologia. 70 (2): 238–241. CiteSeerX 10.1.1.334.1054. doi:10.1007/bf00379246. PMID 28311664.
  2. Berg, Cornelis C.; Pilar Franco Rosselli; Diane W. Davidson (2005). Cecropia. Flora Neotropica. 94. [New York Botanical Garden Press, Organization for Flora Neotropica]. pp. 1–230. JSTOR 4393938.
  3. Angiosperm Phylogeny Group II (2003). "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II". Botanical Journal of the Linnean Society. 141 (4): 399–436. doi:10.1046/j.1095-8339.2003.t01-1-00158.x.
  4. Lowe, S.; M. Browne; S. Boudjelas; M. De Poorter. 100 of the World's Worst Invasive Alien Species A selection from the Global Invasive Species Database (PDF). The Invasive Species Specialist Group (ISSG) a specialist group of the Species Survival Commission (SSC) of the World Conservation Union (IUCN). Archived from the original (PDF) on 2017-03-16. Retrieved 2013-01-20.
  5. McKey, Doyle (1988). "Cecropia peltata, an Introduced Neotropical Pioneer Tree, is Replacing Musanga cecropioides in Southwestern Cameroon". Biotropica. 20 (3): 262–264. doi:10.2307/2388243. JSTOR 2388243.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.