BORBAGINACBJ&. 155 



V 

 Var, oalyoosa, Gr. Flowers crowded, somewhat capitate: calyx longer. 



12. E. dumetorum, Greene. Almost climbing: papillose-hispid: 2 sepals united. 



13. E. barbigera, Gr. Nutlets gray, very rough, rarely all fertile. 



14. E. intermedia, Gr. Nutlets thickly muricate, groove with open basal BOAT. 



15. E, ambigua, Gr. Nutlets minutely muricate, groove widely forked. 



16. E. muriculata, Gr. Stout: spikes 2-3-radiate: nutlets triangular-ovate. 



17. E. Jonesii, Gr. Slender: spikes more numerous, paniculate: calyx smaller. 



18. EL micromeres, Gr. Hispid, diffuse: spikes filiform: flowers minute. 



19. E. micrantha, Gr. var. lepida, Gr. Hoots red: hispid: corolla 2& Unea long. 



7. PLAGIOBOTHBYS, Fischer & Meyer. 

 9 Nutlets not on stipe-like attachments: calyx more or less vittous with yellowish or nuty 



hairs, sometimes deciduous above the base (circumscissile). 

 Sepals nearly distinct; in fruit 3 lines long, lax: nutlets broadly ovate ............... 1 



Calyx deeply 5-clef t: giving a violet stain to paper ........................... 2, 3, 4 



Calyx cleft nearly to the base, 2-3 lines long in fruit not cbnnivent .................. 5 



Calyx cleft half way, silky, in fruit conni vent, soon circumscissile ................... 



* Nutlets on stipe-like attachments: hispidulous ........................... ......... 7 



1. P. rufescens, F. & M. Stems slender from rosulate tuft of radical leaves. 



2. P. tenellus, Gr. Radical leaves rosulate: nutlets 4-lobed or cross-like, shining. 



3. P. Shastensis, Greene. Similar, with larger flowers and nutlets. Mt. Shasta. 



4. P. Torreyi, Gr. Diffusely procumbent, hispidulous: leaves oblong. . 

 6. P. canescens, Benth. Villous: spikes, as in the last, often leafy below. 



6. P. nothofulvus, Gr. Rosulate leaves thin: corolla 2 or 3 lines broad. 



7, P. Oooperi, Gr. Diffuse: corolla 2 or 3 lines broad, throat closed. 



^ 



8. OMPHALODES, Tournefort. 

 O. Howard!, Gr. Silky, silvery: flowers few: corolla 4-5 lines broad. Or. 



9. ECHINOSPERMUM, Lehmann. 

 Prickles of the fruit barbed at apex only : calyx in fruit reflexed. .............. !,, 8 



Prickles barbed to the base: crests of small white corolla small ..................... .4 



1. E. Calif ornicum, Gr. Corolla short-funnelform, blue, 2-6 lines broad. 



2. E. floribundum, Lehm. Corolla rotate, blue or often white, 2-3 lines broad. 



3. E. diffusum, Lehm. Similar corolla 4-9 lines broad: back of nutlet naked. 

 4 B. Qreenei, Gr. Diffuse: nutlets triangular-ovoid: prickles terete. N. Gat 



10. OYNOG-LOSSUM, Lehmann. 



1. 0. Occident ale, Gr. Hispidulous: upper leaves sessile; lower, spatulate. 



2. 0. grande, Dougl. Soft-viUous becoming glabrate: leaves all petioled. 

 Var. Iseve, Gr. Smooth: corolla smaller, lobes shorter than tube. 



