22218. Lycopodium squarrosum Forst. Small bunches along wooded ledges 
of the river; Sid stems hanging, biforked once or twice, the young shoots 
erect and more rigid. Mt. Pinatubo, April to June, 1927. Lycopod. 
22220. [No name.] On host number 22219: Sapindaceae [no entry for 
this collection]. Mt. Pinatubo, April to June, 1927. Crypt. 
22221. Stephania exigua Miers. Rambling vines among thickets of dry 
river ledges; stem 1/2 inch thick, pliable, the branches green; leaves thin, 
paler beneath; berries green, yellow or red; the inflorescer.:e green. Mt. 
Pinatubo, April to June, 1927. Menisp. 
22223. Pipturus arborescens (Link.). Erect shrub with numerous lax 
branches, the brown bark tough and easily stripping; along the river bank; 
leaves descending, much lighter green beneath; fruit clusters dark green, 
when ripe soft and white. Mt. Pinatubo, April to June, 1927. Urtic. 
22224. Dryopteris laucolepis (Pr.) Max. Small terrestrial clumps in 
wet sandy soil of river banks; root stock very short, thick; stipes ascend- 
ing, yellowish brown, 1 to 2 feet long, the frond longer and much recurved, 
its segments likewise recurved; the basal stipe portion covered with pale 
whitish to brownish colored scales. Mt. Pinatubo, April to June, 1927. Polypod. 
22225. Pogostemon williamsii Elm. n. sp. Low shrub along the river 
bottom; branches crooked, yellowish brown; leaves folded, much paler beneath, 
very soft; spikes erect, the flowers dark blue. Mt. Pinatubo, April to 
June, 1927. Labiat. 
22226. Gonostegia reptans C.B. Rob. Annual or biennial herbs sprawl- 
ing over the hot sands along the river; stems and branches reddish brown; 
leaves much darker green above and sublucid; the small flowers pale white. 
Mt. Pinatubo, April to June, 1927. Urtic. 
22227. Trema philippinensis Elm. n. sp. An erect shrub-like tree in 
hot river banks; stem widely branched; leaves horizontal or descending and 
tips recurved, much darker green above; flowers yellowish, the berries 
green, red to nearly black when ripe. Mt. Pinatubo, April to June, 1927. . 
Ulmac. 
22228. Isachne myosotis Nees. Forming dense masses in wet sandy soil 
along the river bottom among boulders; blades horizontal, flat, pale green 
but more so beneath; panicle erect, rather old, green. Mt. Pinatubo, April 
to June, 1927. Gramin. 

