9 o 



B( R \t,i.\ \t E \i 



Vol. III. 



13. ONOSMODIUM Michx. l'l. Bor. Am. 1: [32. 1803. 



Perennial stout hispid or hirsute branching herbs, with alternate entire strongly veined 

 leaves, and rather small yellowish or greenish white proterogynous flowers, in terminal leafy- 

 bracted scorpioid spikes 01 racemes. I alyx deeplj 5-parted, the segments narrow. 1 orolla 

 tubular or tubular-funnelform, 5-lobed, the lobes erect, the throat not appendaged, the sinuses 

 slightly indexed, the tube with a glandular to-lobed hand within at the base. Stamens 5, 

 inserted on the tube or throat of the corolla, included; filaments short. Ovarj 4-parted; 

 style filiform, exserted. Nutlets 4, or commonly only 1 or 2 perfecting, ovoid, sometimes 

 sparingly pitted, shining, smooth, white, attached by the base to the nearly flat receptacle, the 

 scar of attachment small, flat. [Greek, like onosma, or ass-smell. | 



Ah. n:i in species, natives of North America and Mexico. Besides the following, 3 others occur 

 in the southern and southwestern United States. Type species: Onosmodium hispidum Michx. 



I Ila-lobes 2-3 times as long as wide. 



Corolla-lobes scarcely longer than wide. 

 Stem glabrous below. 

 Stem hirsute or pubescent to the base. 



Pubescence silky; nutlets distinctly pitted. 

 Pubescence hirsute to strigose ; nutlets indistinctly pitted. 

 Nutlets not constricted. 

 Nutlets distinctly constricted just above the base. 



1. O.virginianum, 



2. O. subsetosum. 



3. O. molle. 



4. O. occidenlale. 



5. O. hispidissimum. 



i. Onosmodium virginianum ( L.) DC. Vir- 

 ginia False Cromwell. Fig. 3542. 



Lithospermum virginianum L. Sp. PI. 13^. 1753. 

 Onosmodium virginianum DC. Prodr. 10: 70. 1S46. 



Densely appressed-hispid or strigose, with stiff 

 hairs; stem rather slender, usually branched above, 

 l-2i high. Leaves oblong, oval, or oblong-lanceo- 

 late, obtuse or acutish, sessile, l'-3i' long, or the 

 lower oblanceolate and narrowed into petioles ; calyx- 

 segments linear-lanceolate, acuminate; corolla cylin- 

 dric or nearly so, yellowish-white, about 4" long, 

 the lobes narrowly lanceolate, acuminate. 2 or 3 times 

 as long as wide, nearly as long as the tube, strigose 

 without ; nutlets ovoid, obtuse or obtusish, pitted, 

 i"-li" long. 



In dry thickets or on hillsides, Massachusetts to Penn- 

 sylvania, Florida and Louisiana. Ascends to 3000 ft. in 

 Virginia. Wild job's-tears. May-July. 



2. Onosmodium subsetosum Mack. & Bush. 

 Ozark False Cromwell. Fig. 3543. 



O. subsetosum Mack. & Bush; Small, Fl. SE. U. S. 1001. 

 1903- 



Stem erect, glabrous, or with a few scattered ap- 

 pressed hairs above, somewhat branched, 3 high ot 

 less, the branches appressed-pubescent. Leaves lanceo- 

 late, acute, papillose and appressed-hispid above, whitish 

 appressed-pubescent beneath, the larger about 3i' long ; 

 bracts l'-l' long; calyx-lobes oblong, obtuse, 3" long- 

 corolla about 5" long, canescent, its lobes triangular, 

 acute, about l" long; fruiting pedicels 2"-3" long; nut- 

 lets whitish, ovoid, ii" long, obtuse or acutish, not con- 

 stricted, sparingly pitted. 



Barrens, Ozark Mountains, Missouri and Arkansas. 

 June-Aug. 



