APPENDIX. 
DOUBTFUL AND DISCARDED SPECIES. 
1. Aspidium (Polystichum ?) stramineum. Kaulf. Fronds 
2- pinnate ; pinnae oblong-trapeziform, mucronate, serrate, 
auricled at base, rather hairy below ; sori scattered, placed 
near the margin ; rachis and stipes very scaly. K. Sprengel , 
in Linn. Syst. Yeget., vol. 4, p. 105. 
2. Aspidium (Lastrea ?) oppositum. Kaulf. Fronds 3-pin- 
nate or supra-decompound, lower pinnae opposite, 2-pinnatifid, 
smooth ; their pinnules one-sided, oblong-lanceolate, decur- 
rent, confluent at base ; tertiary inferior pinnae ovate-oblong, 
entire ; terminal ones rather acute, sub-dentate. Sori solitary ; 
rachis sparingly scaly. Sprengel . 1. c., p. 108. 
3. Asplenium flexuosum . Schrad. Fronds pinnate; pinnae 
ovate-lanceolate, acute, pinnatifid ; segments lanceolate-cu- 
neate, truncate, 2-dentate at the apex ; lower ones deeper 
incised ; uppermost confluent ; rachis flexuose, glabrous. 
Schlecht. Adumb., p. 29. (A. discolor . Nob. ?) 
Locality not recorded. (Rev. Mr. Hesse.) 
4. Pteris cuspidata. Thbg. Fronds pinnate, smooth ; 
pinnae alternate on very short stalks, lanceolate, cuspidate, 
serrate, straight-veined. Stipes half-round, doubly channelled, 
glabrous, 12 inches high. Thbg. Flor. Cap., p. 732. 
5. Pteris tabularis. Thbg. Fronds pinnate, glabrous ; 
pinnae alternate, sessile, approximate, lanceolate, veiny ; lower 
ones short ; terminal pinnae 3-5 fid. Stipes half-round, chan- 
nelled, smooth. Caudex clothed with long ferruginous scales. 
Thbg. Flor. Cap., p. 732. 
In moist places on Table Mountain. (Thunberg.) 
6. Pteris (Allosorus?) involuta . Sw. Fronds 2-pinnate, 
oblong-lanceolate; pinnae opposite, oblong, short; pinnules 
alternate, adnate, subcordate-ovate, blunt; terminal one 
3- lobed or hastate, all of them entire, subinvolute, glabrous. 
Fructification marginal, continuous. Stipes round, black- 
purple, glossy, sparingly paleaceous. Schlecht. Adumb., p. 46. 
