198 ELEMENTS OF BOTANY. 



IV. LITHOSPERMUM. 



Annual or perennial herbs, mostly rough-hairy, and with 

 red roots ; leaves alternate, entire ; flowers in leafy-bracted 

 spikes or racemes ; calyx 5-parted, the lobes narrow, equal ; 

 corolla funnel-form to salver-form, obtusely 5-lobed, smooth, 

 crested or hairy in the throat ; stamens 5, inserted in the 

 tube of the corolla, included; ovary deeply 4-parted, style 

 slender, stigma capitate or 2-lobed ; nutlets 1-4, white and 

 smooth or brown and wrinkled, truncate at the base. 



1. L. ARVEXSE L. Field Gromwell. Annual or biennial ; 

 rough with appressed hairs ; stem erect, simple or branched from 

 the base, 6-18 in. high; leaves lanceolate to linear, the lower obtuse 

 at the apex and tapering into a short petiole, tlie upper acute and 

 sessile ; flowers scattering and sessile on the spikes ; calyx lobes 

 linear-subulate, as long as the yellowish-white, funnel-form corolla ; 

 nutlets brown, wrinkled and pitted, about one-half the length of the 

 calyx. March- April. Fields and waste places. 



2. L. Gmelini (Michx.) Hitch. Hairy Puccoon. Perennial; 

 hispid with rigid hairs ; stems usually clustered, erect, simple, or 

 branched above, stout, 1-2 ft. high ; leaves linear-lanceolate, obtuse, 

 sessile, the lower often scale-like ; flowers in leafy, terminal racemes ; 

 calyx lobes linear ; corolla salver-form, orange-yellow, the tube | in. 

 long, twice the length of the calyx, hairy within, the lobes rounded, 

 spreading, the throat crested ; nutlets white, shining, ovoid. April- 

 May. In dry pine barrens. 



V. ONOSMODIUM. 



Perennial, hispid herbs ; stems stout ; leaves alternate, 

 entire, prominently veined; flowers greenish-white, on a 

 terminal bracted spike or raceme ; calyx 5-parted, lobes lin- 

 ear ; corolla tubular, the 5 short, acute lobes connivent, tube 

 10-toothed within; stamens included, nearly sessile; style 

 filiform, exserted, ovules 4 ; nutlets often only 1 or 2, white, 

 ovoid, smooth and shining, or pitted. 



1. O. Carolinianum (Lam.) DC. Carolina Gromwell. 



Stem stout, erect, branching, rough with rigid white hairs, 2-4 ft. 

 high ; leaves ovate-lanceolate to oblong, acute at the apex, sessile, 

 5-9-ribbed ; flowers pediceled, yellowish-white ; calyx about half the 

 length of the corolla, which is pubescent on the outside ; nutlets dull 



