EHRETIA FAMILY 193 



Family 111. EHRETIACEAE. Ehretia Family. 



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

 united. 1. Eddya. 



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

 at the center. 2. Triquiliopsis. 



1. EDDYA Torr. l. E. hispidissima. 



2. TIQUILIOPSIS (A. Gray) HeUer. 



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



1. T. Nultallii. 



Perennial, often suffruticose 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 scorpioid spikes or racemes. 



1. Heliotropium. 

 Cone of the stigma penicillate-setose ; flowers a.xillary to leaf-like bracts. 2. Euploca. 



1. HELIOTROPIUM L. Heliotrope. l. 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 radiately divergent, entire-margined. 2. Gruveua. 



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

 obhquely on the receptacle; stout biennials or perennials. .3. Cyxoglossum. 

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

 back. 4. Lappul.1. 



Nutlets unarmed, or if prickly the prickles not hooked. 

 Receptacle conic or elongate; nutlets attached laterally. 



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

 Calyx in fruit neither much enlarged, nor conspicuously vemy. 



Coi'olla blue or white (yellowish only m a few species" of Oreocarya), with 

 fornicles in the tliroat (except in Greencocharis, and obscurely so in 

 Eremocarya) : cotyledons entire. 

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

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

 perennials. 6. Eritrichium. 



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

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

 plants rarely puhinate-cespitose. 

 Pedicels and calyx persistent in fruit. 



Calyx circumscissOe ; plants dichotomously branched. 



7. Greexeocharis. 

 Calyx not circumscLssile. 



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



8. Plagiobothry.s. 

 Nutlets erect, the groove or scar of attacliraent naked. 



Plants dichotomously branched; racemes biserial; calyx cleft 



to the base. 9. Eremocarya. 



Plants not dichotomously branched; inflorescence racemi- 

 form or thyrsoid; 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. 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. Crypt.\ntha. 



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



13. Amsinckl\. 

 Receptacle flat or merely convex. 



Scar of the nutlets small and marginless. 



Nutlets oblif|uely attached; flowers mostly bractless; corolla blue or white, 



witii fuiinelfurm throat. 14. ]Merten'SL\. 



Nutlet.s attached Ijy the very base. 



Corolla salverfurm or fimnelform, its lobes rounded and spreading. 



