BORRAQINACBJL 89 



i^ A. lycopaoides, Lehm. Stiff bristles with pimple-like base: leaf margin* oftea 

 ondalate: often branching: very variable. 



6. KRYNITZKtA, Fischer & Meyer. 

 I 1. 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 rid;3'e down the inner side, fiied by the base of 



the inner angle. Entire plant light green. 



• Mostly diffuse: lotoer leaves often opposite: corolla 1 or 2 lines broad 2, 3 



* • Flowers numerous: limb of corolla nearly rotate^ S 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 less 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 

 scorpioid spikes, 



* Fruiting calyx often falling toith the enclosed nutlets, these smooth, shining, acute: sepal* 



narrow, hispid, slender. 



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



Nutlets usually all maturing scarcely a line long 10, 11 



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 bractless: calyx pungent- bristly. 



Calyx very villous-hispid, In fruit 3-5 lines long, mid-rib strong 19| 



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



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



In fruitl or 2 lines long, more or less connivent over the angular nutlets.. 16, 17, 18 



• • Fruiting calyx deciduous above a persistent basal cup: nutlets ovate-deltoid, 3 -angled, 



usvxdly very smooth, groove forked. 

 Much branched, with flowers almost from base, hispid 19 



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



2. K. Califonuca, Gr. Leaves small, narrow: flowering from near the base. 

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



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



4. K. Chorisiana, Gr. Some pedicels 2 to 12 lines long: leaves large. 



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



6. K. mollis, Gr. Perennial stems creeping, soft-hairy. Wet borders of ponds. 



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



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



9. BL micro stachys, Greene. Smaller, hispidulous: calyx bristles not deflezed. 



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



11. K. Torreyana, Gr. Nutlets attached half way up, groove forked. 



