FIG WORT FAMILY. 385 



ones on lip : galea and tube whitish 7. O. fauciharbatus. 



Herbage somewhat reddish; galea purple. 



Corolla deep sulphur-yellow 8. O. crianthus. 



Corolla white or rose-color: vars. of 8. O. crianthus. 



Leaves broader, entire or with few segments; corolla-tube broader and dilated up- 

 wards; herbage somewhat yellowish; corolla cream-color throughout 



9. O. lithospcrmoidcs. 



1. O. attenuatus Gray. Slender, strict or more rarely with a few branches, 



5 to 12 in. high; leaves linear-lanceolate, attenuate, entire or the upper with 

 one gr two filiform lobes above the middle, 3 in. long or less, mostly 1, or some- 

 times 5, lines wide; spikes slender, loose below, denser above; bracts with white 

 tips or almost wholly herbaceous; calyx-lobes 4, filiform, the divisions of nearly 

 equal depth ; corolla dull white, not deeply bilabiate ; lower lip shallowly saccate, 

 purple-dotted, its lanceolate teeth large for the size of the corolla, almost as 

 long as the saccate portion and nearly or quite equaling the galea. 



Fields: Coast Ranges; Great Valley; Sierra Nevada foothills and far north- 

 ward. Apr.-May. 



2. O. castilleioides Benth. Corymbosely branched from the base, commonly 



6 to 10 in. high, somewhat hirsute-pubescent; leaves broader than in the pre- 

 ceding, 4 lines wide or less, entire or with laciniate linear divisions; spikes 

 short and dense, or even subcapitate, the bracts with white or yellowish tips; 

 calyx-segments linear; corolla 6 to 10 lines long, dull white with purple marks; 

 galea plainly longer than the bright crimson teeth. 



Marshy ground near the coast: Alameda; West Berkeley; Napa Valley; 

 Sonoma Co. and northward to Washington. June. 



3. O. densifiorus Benth. Escobita. Strict or strictly branched, 5 to 15 

 in. high, finely pubescent; leaves oblong-lanceolate to linear, with mainly a 

 pair of filiform or slender divisions; spike dense, 4 in. long or less; bracts 

 3-cleft with purple and white tips; calyx-segments spatulate-dilated, purple; 

 corolla 8 to 10 lines long, purple and white; lower lip with large crimson dots, 

 the teeth nearly as long as the galea. 



Valley fields and low hills, common: Calistoga; San Eafael; Mill Valley; 

 Newark, etc., and southward along the coast to San Luis Obispo. May. 



4. O. purpurascens Benth. Owl's Clover. Erect or frequently much 

 branched from the base with ascending branches, 4 to 15 in. high, villous- 

 pubescent; leaves parted into many filiform divisions, which are often brownish 

 tinged ; spike thick and dense, 2 to 4 in. long ; bracts dilated at base, palmately 

 cleft into filiform or narrowly linear lobes, the upper with crimson or purple 

 spatulate-dilated tips, as also the calyx-lobes; calyx more deeply cleft behind 

 than before; corolla crimson or purplish, 1 to 1*4 in. long; lower lip white- 

 tipped, with yellow and purple dots or markings; galea densely purple-bearded 

 on the back, incurved at tip. 



Sierra Nevada foothills; Sacramento and San Joaquin valleys; North Coast 

 Eanges and southward to Southern California. Common. Apr.-May. 



5. O. pusillus Benth. Slender and weak, 2 to 4 in. high; herbage purplish, 

 sparingly hispidulons -pubescent ; leaves pinnately cleft into linear or filiform 

 divisions; bracts longer than the scattered inconspicuous dark red flowers; 

 corolla 2 to 3 lines long. 



Hillsides and fields, coloring moist spots with a dull red hue: Oakland Hills; 

 Marin Co.; Napa Valley; Humboldt Co. and northward. Often parasitic on 

 grasses (J. B. Davy). Mar.- Apr. 



6. O. floribundus Benth. Erect, somewhat corymbosely branched from 



