2. H. serpyllifòlia, Michx. Like the last, but filiform _stems prostrate_, extensively creeping and rooting; _leaves orbicular to ovate_ (2--4´´ long); corolla rather larger, and _deep violet-blue_.--Along streamlets and on mountain-tops, Va. to Tenn. and S. C. [+][+] _Winter-annuals, branching from the simple root; peduncles much shorter._ 3. H. pàtens, Ell. An inch to at length a span high, with ascending branches and erect peduncles; leaves spatulate to ovate; corolla much smaller than that of n. 1, violet-blue or purplish without yellowish eye, _the tube longer than its lobes, twice the length of the calyx-lobes_.--Dry or sandy soil, S. Va. to Tex. and Ill. (?) 4. H. mínima, Beck. More diffuse, _commonly scabrous_; stems at length much branched and spreading (1--4´ high); lowest leaves ovate or spatulate, the upper oblong or nearly linear; earlier peduncles elongated and spreading in fruit, the later ones short; _tube of the purplish corolla not longer than its lobes or the ample calyx-lobes_ (1½´´ long).--Dry hills, Mo. to Tex. March--May. [*][*] _Erect, mostly perennial herbs (6--20´ high), with stem-leaves sessile, and flowers in small terminal cymes or clusters; corolla funnel-form, purplish, often hairy inside; seeds meniscoidal, with a ridge across the hollowed inner face._ 5. H. purpùrea, L. Pubescent or smooth (8--15´ high); _leaves varying from roundish-ovate to lanceolate_, 3--5-ribbed; calyx-lobes longer than the half-free globular pod.--Woodlands, Md. to Ark., and southward. May--July.--Varying wonderfully, as into-- Var. ciliolàta, Gray. A span high; leaves only ½´ long, thickish; cauline oblong-spatulate; radical oval or oblong, rosulate, hirsute-ciliate; calyx-lobes a little longer than the pod.--Rocky banks, from the Great Lakes and Minn. to Ky.; passing into Var. longifòlia, Gray. A span or two high, mostly glabrous, thinner-leaved; leaves oblong-lanceolate to linear (6--20´´ long); radical oval or oblong, less rosulate, not ciliate.--Rocky or gravelly ground, Maine to Minn., south to Ga. and Mo.; also northward. Var. tenuifòlia, Gray. Slender, lax, diffuse, 6--12´ high, with loose inflorescence, and almost filiform branches and peduncles; cauline leaves all linear, hardly over 1´´ wide.--S. E. Ohio to Va., N. C., and Tenn. Var. calycòsa, Gray. Almost 1° high; leaves broadly lanceolate, thickish; calyx-lobes elongated (2--4´´ long), much surpassing the pod.--From Ill. (_Hall_) to Ark. and N. Ala. 6. H. angustifòlia, Michx. Stems tufted from a hard or woody root; _leaves narrowly linear_, acute, 1-ribbed, many of them fascicled; flowers crowded, short-pedicelled; lobes of the corolla densely bearded inside; _pod obovoid, acute at base, only its summit free_, opening first across the top, at length through the partition.--Barrens, Ill. to Kan., south to Tex., Tenn., and Fla. 2. OLDENLÁNDIA, Plumier.