e-Flora of Thailand
Volume 3 > Part 2 > Year 1989 > Page 162–163 > Davalliaceae > Davallia
5. Davallia trichomanoides Blumewfo-0001255610
Enum. Pl. Javae: 238. 1828; Holttum, Rev. Fl. Malaya 2: 361. 1955; Dansk Bot. Ark. 20: 25. 1961; Tagawa & K.Iwats., S.E. Asian Stud. 5: 76. 1967.
Accepted Name : This is currently accepted.
Description : Rhizome long-creeping, 3–5 mm diam., densely scaly throughout; scales various as noted in the key to the varieties. Stipe stramineous, about 10 cm long. Lamina deltoid or roundly pentagonous, gradually narrowed from base to apex, about 18 cm long and wide, or up to 35 cm long, tripinnate to quadripinnatifid; basal pinnae the largest, gradually narrowed from base to acute apex, normally 10 by 6 cm, shorlty stalked; upper pinnae gradually smaller upwards; pinnules subsessile or larger ones very shortly stalked, moderately acute to acute at apex, cuneate at base; secondary pinnules sessile, round to moderately acute at apex, cuneate at base, lobed at margin; lobes acute at apex, subcoriaceous, glabrescent, green, paler beneath; veins pinnate, hardly distinct. Sori terminal on veinlets; indusia cup-shaped, up to 2 mm long, 0.7 mm diam.
There are 2 distinct varieties which are sometimes treated as species. As noted by Holttum (1955), the rhizome-scales of var. trichomanoides are somewhat variable in colour and hairiness, though those of var. lorrainii are stable and discriminative by themselves.
1. Scales gradually narrowing from peltate base to acuminate apex, bright brown, entire and nearly glabrous to short-hairy at margin. Ultimate segments lobed more than half-way towards midribs a. var. trichomanoides
1. Scales abruptly narrowing above the base to form long tails, dark except for those on young rhizome, with long paler hairs at margin; hairs longer than the breadth of scales. Ultimate segments very shallowly lobed b. var. lorrainii