Alsophila austroyunnanensis S.G. Lu
  • Acta Bot. Yunnan.


This taxon is accepted by Cyatheaceae
Notes: More details could be found in The Plant List v.1.1. Originally in The Plant List v.1.0

General Description

Trunk erect, 2-7 m tall. Fronds 2-pinnate-pinnatifid, 4-4.5 m; stipe black, lustrous, 1-1.5 cm, with short sharp spines and dense scales at base; scales brown in middle, lanceolate, 1.5-3 cm × 2-3 mm, margin pale brown, irregular; lamina 2-3 × 1-1.8 m; pinnae 50-90 × 15-25 cm; pinnules alternate, spreading, lanceolate, 8-13 × 1.5-2.5 cm, broader at middle, base truncate, shortly stipitate, pinnatifid almost to costule; pinnule segments up to 25 pairs, alternate, slightly ascending; sterile segments 10-15 × 4-5 mm, margin and apex dentate, or shallowly pinnatifid; fertile segments narrow, 5-10 × 1-3 mm; veinlets 10-12 pairs, ascending, simple or forked. Lamina papery, pale brown on abaxial surface, dark brown on adaxial surface; rachis and costa dark brown, abaxial side of costa glabrous or with small scales, adaxial side of costa and costule with dense, brown, stiff hairs, abaxial side of costule and midvein with small, ovate, brown scales, margin of scales dentate; normally lower few pinnae fertile, and often only lower pinnules fertile. Sori medial, close to midveins, ca. 10 pairs per segment, covering whole segment when mature; indusia absent.

  Bibliography

  • 1 Acta Bot. Yunnan.

 Information From

Cyatheaceae
World Flora Online Data. 2017.
  • A CC0 1.0 Universal (CC0 1.0).
Flora Of China @ efloras.org
http://www.efloras.org/flora_page.aspx?flora_id=2
'Flora of China @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=2 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  • B All Rights Reserved
World Flora Online consortium
http://about.worldfloraonline.org/
World Flora Online Data. 2017.
  • C CC0 1.0 Universal (CC0 1.0).