BORAGE FAMILY 713 



Calyx not circumscissile. 



Nutlets oblique or incurved, attached by a median false caruncle. 



8. Plagiobothets. 

 Nutlets erect, the groove or scir of attachment naked. 



Plants dichotomously branched; racemes biserial; calyx cleft 



to the base. 9. Eremocarta. 



Plants not dichotomously branched; inflorescence racemi- 

 form or thjTsoid; its branches uniserial; calyx not 

 cleft to the base. 

 Calyx-lobes spreading in fruit; leaves alternate. 



Perennials, with bracted racemose or thyrsoid inflor- 

 escence. 10. Oreocahta. 

 Annuals, mostly with bractless racemose inflorescence. 



12. Crtptaxtha. 

 Calyx nearly closed in fruit; leaves proper opposite, 



with connate bases; annuals. 11. Allocabta. 



Pedicels in fruit falling off with the calyx; the latter closed; branched 

 but not dichotomous annuals. 12. Crtptantha. 



Corolla yeUow or orange, often with naked throat; cotyledons 2-cleft. 



13. AM5IXCKIA. 



Receptacle flat or merely convex. 



Scar of the nutlets smaU and margtnless. 



Nutlets obliquely attached; flowers mostly bractless; corolla blue or white, 



with funnelform throat. 14. Mertexsia. 



Nutlets attached by the very base. 



Corolla salverform or funnelform, its lobes rotmded and spreading. 



Racemes not bract-ed; corolla in ours blue, its lobes convolute in the 



bud. 1.5. Mtosotis. 



Racemes bracted; corolla yellow or yellowish, its lobes imbricated in 

 the bud. 16. LiXHOSPERiirM. 



Corolla tubular, its lobes erect, acute, otherwise as in Lithospermum. 



17. OXOSMODIUM. 



Scar of the nutlets large and excavated, bordered by a prominent margin. 

 Fomices in the throat of the coroUa short, blunt. 18. AxcnrSA. 



Fomices long, linear or lanceolate. 19. Stmt'HTTUM. 



1. PECTOCARYA DC. 



Small dichotomously branched amiuals. Leaves alternate, narrowh' hnear. 

 Flowers perfect, regular, minute, scattered. Cah-x deeply 5-cleft; lobes spread- 

 ing or reflexed in fruit. CoroUa salverform, with a crown nearly closing the 

 throat. Stamens included. Style short; stigma capitate. Nutlets spreading, 

 in pairs, thin, vrith laciniate or at least undulate wings, attached at the inner end 

 to the depressed receptacle. 



Nutlets linear or hnear-oblong, their wings pectinat-ely or laciniately toothed, ea.ch tooth 

 ending in an uncinate prickle. 1. P. linearis. 



Nutlets oblong, their wings not laciniate, sinuately lobed, uncinate-prickly usually 

 onlj- at the apex, sometimes with a few prickles on the sides. 2. P. penicillata. 



1. P. lineaxis (R. & P.) DC. Stem strigose, branched at the base, a-20 

 cm. high; leaves narrowly linear, 1—4 cm. long; corolla nearly 2 mm. long, longer 

 than the hnear cal>-x-lobes; nutlets 3-4 mm . long. Gravelly soil: Calif. — s L'tah 

 — ^Ariz.; Mex. and S. Am. L. So7i. F-^^Iy. 



2. P. penicillata TH. & A.) A. DC. Stem branched at the base, strigose, 

 3-20 cm. long; leaves linear, 0.5-2 cm. long, strigose; corolla white, 1-1.5 mm. 

 long; nutlets oblong or somewhat fiddle-shaped, 2-2.5 mm. long. P. miser A. 

 Nels. Sandy soU: B.C.— Wyo.— .Iriz.— Cahf.; L. Cahf. Son. Mr-Je. 



2. GRUVELIA A. DC. 



Small branched annuals. Leaves alternate, narrowly linear. Flowers perfect, 

 regular, minute, scattered, irregularly opposite the leaves. Cahrx deeply 5-cleft; 

 lobes reflexed in fruit. Corolla salverform, with a crown of small fornices, 

 nearly closing the throat. Stamens included. Nutlets radiately divergent, 

 flat, depressed, thin, attached at the inner end to the depressed receptacle, 

 prickly on the back, the rim or wing-margin entire. 



1. G. setosa (A. Gray) Rydb. Diffusely branched annual; stem more or 

 less hirsute as well as strigose; leaves linear-oblanceolate or linear, 1-3 cm. long; 

 coroUa white, not exceeding the hnear-oblanceolate obtuse sepals; nutlets broadly 

 obovate, 2-2.5 mm. long, surrounded b}' a thin wing-margin, prickly on the back 



