EHRETIA FAMILY 193 



Family 111. EHRETIACEAE. Ehretia Family. 



Corolla not appendaged; stamens unequally inserted; nutlets rough-granulate, ventrally 

 united. 1. Eddya. 



Corolla appendaged; stajnens equally inserted; nutlets smooth and shining, united only 

 at the center. 2. Tbiquiliopsis. 



1. EDDYA Torr. l. E. hispidissima. 



2. TIQUILIOPSIS (A. Gray) HeUer. 



Annual, canesceut and hirsute; leaf-blades rhombic or rotund; corolla pink or white. 



1. T. Nuttallii. 



Perennial, often suflrutlcose at the base, merely canescent; leaf-blades obovate or ovate; 



corolla bluish. 2. T. Palmeri, 



Family 112. HELIOTROPACEAE. Heliotrope Family. 



Cone of the stigma not setose; flowers in terminal scorpiold spikes or racemes. 



1. Heliotropium. 

 Cone of the stigma penicillate-setose ; flowers axillary to leaf-like bracts. 2. EUPLOCA. 



1. HELIOTROPinM L. Heliotrope. 1. H. spathulatum. 



2. EUPLOCA Nutt. l. E. convolvulacea. 



Family 113. BORAGINACEAE. Borage Family. 



Nutlets with hooked prickles, at least on the margins. 

 Nutlets spreading or divergent on the low receptacle. 



Nutlets elongate, flat, wing-margined, attached underneath the edge of the recep- 

 tacle; prickles only on the margins; slender annuals. 

 Nutlets divergent in pairs ; margin laciniate or undulate. 1. Pectocarta. 

 Nutlets equally radlately divergent, entire-margined. 2. Gruvelia. 



Nutlets short, not wing-margined, prickly all over, attached horizontally or 

 obliquely on the receptacle; stout biennials or perennials. 3. CYNOGLOSSxnM. 

 Nutlets erect on the elevated receptacle, prickly on the margin, rarely along the 

 back. 4. Lappula. 



Nutlets imarmed, or if prickly the prickles not hooked. 

 Receptacle conic or elongate; nutlets attached laterally. 



Calyx in fruit much enlarged, veiny-reticulate and folded. 5. Asperuqo. 

 Calyx in fruit neither much enlarged, nor conspicuously veiny. 



Corolla blue or white (yellowish only in a few species of Oreocarya), with 

 fomicles ia the throat (except in Greeneocharis, and obscurely so in 

 Eremocarya) ; cotyledons entire. 

 Nutlets attached below the middle, with an oblique truncate back, which 

 is surrounded by an entire or toothed margin; low pulvinate-cespitose 

 perenniaLs. 6. Erithichium. 



Nutlets attached at the middle or with an elongated scar reacUng from 

 the base to above the middle, not with a truncate, margined back; 

 plants rarely pulvinate-cespitose. 

 Pedicels and calyx persistent in fruit. 



Calyx circumscissile; plants dichotomously branched. 



7. Greeneocharis. 

 Calyx not circumscissile. 



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



8. Plagiobothrys. 

 Nutlets erect, the groove or scar of attachment naked. 



Plants dichotomously branched; racemes biserial; calyx cleft 



to the base. 9. EREMOC.iRYA. 



Plants not dichotomously branched; inflorescence racemi- 

 form or thyrsoid; its ^branches xmiserial; calyx not 

 cleft to the base. 

 Calyx-lobes spreading in fruit; leaves alternate. 



Perennials, with bracted racemose or thyrsoid inflor- 

 escence. 10. OREOCARYA. 

 Annuals, mostly with bractless racemose inflorescence. 



12. Cryptantha. 

 Calyx nearly closed in fruit; leaves proper opposite, 



with connate bases ; annuals. 11. Allocarya. 



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

 but not dichotomous annuals. 12. Cryptantha. 



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



13. Amsinckia. 

 Receptacle flat or merely convex. 



Scar of the nutlets small and marginless. 



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



with funnelform throat. 14. Mertensia. 



Nutlets attached by the very base. 

 , CoroUa salverform or funnelform, its lobes rounded and spreading. 



