TAB. XXV. 
Aspidium (Polystichum) Thomsoni, Hook. 
Caudice brevi crasso obliquo apice squamoso, stipitibns basi 
insigniter squamosis 3-4-uncialibus gracilibus stramineis 
ima cum rachi straminea setoso-paleaceis^ frondibus digi- 
talibus ad spltliamseam lanceolatis acuminatis subcbartaceo- 
inembranaceis sessilibus pinnatis, pinnis 3-4 lineas longis 
sessilibus ovatls profunde pinnatifidis prsecipue ad marginem 
superiorem vel bipinnatis, pinnulis ovatis lobisque spinu- 
loso-inclsis serratisve, venis pinnatis venulis ultimis clavatis, 
soris solitariis in singula pinnula seu lobo majusculis dorso 
Ycnulai insertis, involucre subovato membranaceo peltato 
pedicellato margine s^pe eroso. 
Hab. Sikkim tiimalaya, Hooker^ JiL et Thomson. Above 
Simla, CoL Bates. Kamaon, elev. 12,000 feet, Strachey 
and Winterhottom, n. 9. 
This must rank among the smallest of the Polystichum- 
group of Aspidium^ approaching nearest to the smallest speci- 
mens of Dr. Wallich’s Aspid. (Polystichum) oxyphyllum. The 
involucre, if constant to its form and pedicel, is very re- 
markable. 
Fig. 1. Fertile pinna, almost again pinnate, f. 2. Portion 
with sori. f. 3-4. Involucres : magnified. 
Cent, 2. t. 25. 
