(146 ) 
5. O. pustttus Benth. Lower lip 3-saccate, 
larger than the slender, straight upper lip; an- 
thers 1-celled; stamens not wrapt in the lanceo- 
late upper lip; corolla purplish, its tube not 
surpassing the calyx—Common. Spring. 
6. O. puRPURASCENS Benth. Lower lip sim- 
ply saccate, broader but not longer than the 
upper lip, the tip of which is incurved and 
back bearded; bracts and corolla white, rose or 
crimson.—Common. Spring. 
7. QO. CAsTILLEIoIDES Benth. Lower lip ven- 
tricose; upper lip straight, its back not beard- 
ed; leaves lanceolate,commonly laciniate; upper 
leaves not attenuate, but cuneate-dilated and 
deeply cleft; spike dense; bracts and corolla 
pale, sometimes sprinkled with red.—Marsh 
near Tamalpais. Spring. 
8. O. DENSIFLORUS Benth. Lower lip ventri- 
cose; upper lip straight, its back not bearded; 
leaves linear; upper leaves attenuate; bracts 3- 
cleft, as long as the flowers; spike dense; bracts 
and corolla purple and white.—Common. 
Spring. 
9. O. arrEnuatus Gray. Lower lip ventri- 
cose; upper lip straight, its back not bearded; 
leaves linear; bracts with slender lobes, her- 
baceous and barely white-tipped; flowers pale; 
lower lip purple-spotted; spike virgate.—Com- 
mon. Spring. 
