BORAGINACEAE (BORAGE FAMILY) 423 



146. Mertensia Bakeri lateriflora (Greene) A. Nels. Pubescence close and 

 canescent: leaves numerous, all linear-oblong: flowers smaller, in a narrow 

 secund cluster. (M. lateriflora Greene, PL Baker. 3: 18. 1901; M. canescens 

 Rydb. Bull. Torr. Bot. Club 31: 640. 1904.) Western Colorado. 



10. MYOSOTIS L. FORGET-ME-NOT 



Low and often spreading herbs, with mostly soft hairy leaves, those of the 

 stem sessile. Flowers small, blue, in slender bractless racemes. In ours the 

 calyx is beset with hairs, some of them bristly and having minutely hooked 

 tips. Stamens and style included. 



1. Myosotis alpestris Schmidt, Fl. Boem. 3: 26. 1793. A green, softly 

 hirsute perennial, with slender, tufted, nearly erect stems 1-2 dm. high: leaves 

 oblong-linear to lanceolate: racemes densely flowered, bractless when fully 

 developed; pedicels mostly shorter than the calyx: calyx-lobes erect: corolla 

 blue, the limb 6-9 mm. broad: nutlets more or less margined and carinate 

 ventrally at the apex. M . sylvatica alpestris Koch. Moist open woods in the 

 mountains; Colorado and Wyoming. 



11. LITHOSPERMUM L. GROMWELL. PUCCOON 



Softly hirsute or hispid herbs, with alternate entire sessile leaves and 

 flowers axillary in leafy bracted spikes. Corolla mostly salverform or funnel- 

 form, yellow or greenish-yellow, naked or pubescent or crested in the throat. 

 Stamens 5, short, included. Nutlets (in ours) bony, ovoid, smooth and 

 polished, attached by their base to the nearly flat receptacle. Roots yielding 

 a violet or red dye. 



Corolla-tube not exceeding the calyx 1. L. pilosum. 



Corolla-tube about twice as long as the calyx. 



Bracts (of the later flowers) scarcely exceeding the calyx . . 2. L. multiflorum. 

 Bracts foliar, much longer than the calyx. 



Oblong-lanceolate 3. L. Gmelinii. 



Narrowly linear 4. L. albicans. 



Corolla-tube more than twice as long as the calyx. 



Pubescence appressed; nutlets pitted ventrally . . . . 5. L. angustifolium. 



Pubescence hispid, spreading; nutlets not pitted . . . . 6. L. asperum. 



1. Lithospennum pilosum Nutt. Journ. Phil. Acad. 7: 43. 1834. Softly 

 hirsute-canescent, with numerous tufted, simple, leafy stems, from a stout 

 root, about 3 dm. high: leaves linear to narrowly lanceolate: flowers crowded 

 in a terminal leafy thyrsus: corolla greenish-yellow, campanulate-funnelform, 

 silky-pubescent on the outside, nearly naked in the throat, the tube and the 

 calyx subequal: nutlets acute, white and shining. From Utah to Montana; 

 extending into British Columbia and California. 



" 2. Lithospennum multiflorum Torr. Wats, in Bot. King's Exped. 238. 

 1871. Minutely strigose-hispid ; stemsjaaore or less tufted, virgate and often 

 paniculate at summit, 3-5 dm. high: leaves linear to lanceolate, often small 

 for the plant: flowers numerous, short-pediceled ; the later ones spicate: 

 corolla light yellow, tubular-funnelform, 10-12 mm. long; lobes short and 

 rounded; crests inconspicuous; tube about twice as long as the calyx and the 

 bract, somewhat bearded at the base within. Wyoming, Colorado ; and south- 

 ward. 



3. Lithospennum Gmelinii (Michx.) Hitch. Spring Fl. Manh. 30. 1894. 

 Hispid or hirsute and at length rough; stems stoutish, 3-5 dm. high: leaves 

 lanceolate or the lower linear; the floral oblong-lanceolate or broader: flow- 

 ers in short, terminal, leafy racemes: corolla orange-yellow, the throat crested, 

 the ring at the base within bearing 10 very hirsute lobes or teeth: stamens and 

 pistils dimorphic: nutlets white and shining, much exceeded by the narrow 

 calyx-lobes. L. hirtum Lehm. Mostly eastward of our range. 



4. Lithospennum albicans Greene, Pitt. 4: 91. 1899. Related to the next, 



