BOBRAGlXACEiE. 89 



S. A. lycopsoides, Lehm. Stiff bristles with pimple-like base: leaf margins often 

 nndulate: of tea branching: very variable. 



6. KBTNITZKIA, Fischer & Meyer. 

 S \. Nutlets ovoid, smooth, shining, a ridge down the back, a groove down the inner 



side, attached to the gynobase one quarter the length 1 



i 2. Nutlets ovoid, somewhat rugose, a ridge down the inner side, fixed by the base of 



the inner angle. Entire plant light green. 



* Mostly diffuse: lower leaves o/len opposite: corolla 1 or Z lines broad 3, 3 



* * Mowers numerous: limb of corolla nearly rotate, 3 to 6 lines broad: yellow crests in the 



throat conspicuous: lower leaves mostly opposite (except in No. 6) 4, 5, 6 



i 3. Nutlets never rugose; inner angle furrowed from leas than half to all the way; back 

 convex; side angles mostly obtuse, never margined: calyx in fruit erect or closed: 

 corolla small, throat naked or the crests not exserted: numerous flowers sessile in 

 soorpioid spikes. 



* Fruiting calyx often falling with the enclosed nutlets, these smooth, shining, acute: sepals 



narrow, hispid, slender. 



Nutlets solitary, rarely 2, acuminate, fixed below the middle 7, 8, 9 



Nutlets usually all maturing scarcely a line long 10, 1 1 



Nutlets unequal, one much larger than the others 12 



Nutlets 3-angled-ovoid, papillose, sharply muricate or scabrous, attached nearly or quite 



up to the apex: usually erect and hispid; spikes braotless: calyx pungent-bristly. 



Calyx very villous-hispid, In fruit 3-5 lines long, mid- rib strong 13 



Calyx 3 lines long or less; bristles pungent, whitish or yellowish. 



In fruit double the length of the nutlets not connivent 14, 15 



In fruit 1 or 2 lines long, more or less connivent over the angular nutlets.. 1 6, 1 7, 1 8 



* * Fruiting calyx deciduous above u, persistent basal cup: nutlets ovate-deltoid, S-angled, 



Tisually very smooth, groove forked. , 

 Much branched, with flowers almost from base, hispid 19 



1. K. lithocarya, Greene. Corolla not surpassing the rusty calyx: spike simple. 



2. K. Califomica, Or. Leaves small, narrow: flowering from near the base. 

 Var. subglochidiata, Gr. Succulent: nutlets minute-bristly with barbed hairs. 



3. K. trachycarpa, Gr. More lower leaves opposite: nutlets broader, granulate. 

 i. K. Chorisiana, Gr. Some pedicels 2 to 1 2 lines long: leaves large. 



5. K. Scouleri, Or. Slender: spikes often branching mostly bractless. 



5. K. mollis, Gr. Perennial stems creeping, soft-hairy. Wet borders of pondi 



7. K. sparsiflora, Greene. Sepals with stiff hooked bristles: nutlet flattened 



8. K. oxycarya, Gr. Strigulose: leaves linear: calyx in fruit deflexed-bristly at ha** 



9. K. microstach.ys, Greene. Smaller, hispidulous: calyx bristles not defleied. 



10. K. leiocarpa, F. & M. Nutlets attached for nearly the whole length. 



11. K. Torreyana, Gr. Nutlets attached half way up, groove fori; ■ I 



