BORAGE FAMILY 721 



Fruit depressed-globose; nutlets incurved on the margins and separated 



by open spaces. 30. O. paradoxa. 



Fruit ovoid-conic; nutlets touching. 



Ridges of the nutlets honeycomb-crested; inflorescence narrow; leaves 



canescent and hispid. 31. O. eulophus. 



Ridges of the nutlets neither much interlacing nor crested. 



Inflorescence, at least in fruit, open, with elongate branches. 

 Corolla 15-18 mm. long; calyx enlarging and becoming 15-18 



mm. long in fruit. 32. O. longiflora. 



Corolla 12-15 mm. long; calyx scarcely enlarging, in fruit less 



than 1 cm. long. 33. O. Wetherillii. 



Inflorescence narrow; stem slender. 

 Basal leaves spatulate. 



Corolla 12-14 mm. long, much exceeding the calyx. 



34. O. cristata. 



Corolla slightly exceeding the calyx. 22. O. echinoides. 

 Basal leaves linear-oblanceolate ; corolla slightly exceeding the 



calyx. 35. O. tennis. 



Nutlets finely muricate; at least the inflorescence with yellowish hairs. 

 Plant low, 1-2 dm. high; basal leaves 2-3 cm. long, 3-7 mm. wide. 

 Corolla about 1 cm. long, pure white; nutlets muricate on the back. 



36. O. fulvocanescens. 



Corolla 12-15 mm. long, often with a yellow eye; nutlets roughly papil- 

 lose. 38. O. flacoculata. 



Plant 2-3 dm. high; basal leaves 4-10 cm. long, 7-15 mm. wide. 



37. O. nitida. 

 Nutlets smooth. 



Fruit not depressed; stem-leaves linear or linear-lanceolate. 



Stem-leaves linear; nutlets brownish, obtuse, slightly ridged on the back. 



39. O. flava. 

 Stem-leaves linear-lanceolate ; nutlets ivory-white, acute, flat on the back. 



40. O. leucophaea. 

 Fruit depressed, acutely margined. 41. O. alata. 



Corolla yellow, or with a yellow throat. 



Basal leaves spatulate or oblanceolate ; corolla usually white with yellow throat; 



nutlets papillose. 38. O. flavoculata. 



Basal leaves narrowly linear-oblanceolate; corolla yellow; nutlets smooth. 



39. O. flava. 



1. O. cinerea Greene. Stems 1-3 dm. high, cinereous-strigose ; leaves 

 elongate, linear-oblanceolate or linear, silvery-cinereous, with appressed hairs; 

 calyx-lobes broadly lanceolate; corolla 8-9 mm. long, 5-7 mm. broad; nutlets 

 light gray, smooth. Arid plains: Colo. N.M. Submont. My-Jl. 



2. O. suffruticosa (Torr.) Greene. Stems 1-3 dm. high, decumbent or 

 ascending at the base, cinereous and hirsute; leaves linear-oblanceolate or linear, 

 3-10 cm. long; calyx-lobes ovate-lanceolate; corolla 5-6 mm. long; nutlets more 

 or less tubercled and white-spotted. E. Jamesii Torr. Krynitzkia Jamesii A. 

 Gray. Plains and foot-hills: S.D. Tex. N.M. Utah Wyo. Plain Sub- 

 mont. My-Jl. 



3. O. multicaulis (Torr.) Greene. Stems stout, 2-4 dm. high; leaves 

 linear-oblanceolate or oblanceolate, 3-10 cm. long; corolla 5-6 mm. long; nutlets 

 smooth and shining. Eritrichum multicaulis Torr. Dry plains: Tex. s Colo. 



Ariz. Son. Submont. My-Au. 



4. O. disticha Eastw. Stems about 3 dm. high, canescent as well as hispid; 

 leaves oblanceolate, 2-4 cm. long, finely canescent-strigose above, appressed- 

 hirsute beneath; racemes few, distichous; calyx-lobes ovate-lanceolate, obtuse. 

 4 mm. long; corolla white, 5 mm. long, and about as wide; nutlets solitary, rounded 

 and arched on the dorsal side, mottled with brown, and slightly papillose. Mesas : 

 Utah. Son. Jl. 



5. O. pustulosa Rydb. Stems 3-5 dm. high, glabrous or nearly so through- 

 out; lower leaves linear-oblanceolate, the upper linear or linear-lanceolate, 3-10 

 cm. long, green; flowers paniculate; sepals triangular-lanceolate, acute; corolla 

 white; tube not exceeding the calyx; limb' 5-6 mm. broad; lobes orbicular; fruit 

 depressed-globose; nutlets mottled with light brown. Canons: se Utah. Son. 

 Jl-Au. 



6. O. virgata (Porter) Greene. Stem 3-6 dm. high, hispid with yellowish 

 hairs; basal leaves oblanceolate, hirsute and hispid, 3-8 cm. long; stem-leaves 

 linear; corolla 6-7 mm. long and fully as broad; nutlets in age brown or gray; 



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