6. P. Franklínii, Gray. Soft-hairy; stem erect (6–15´ high), rather stout; leaves pinnately parted into many lanceolate or oblong-linear lobes, which are crowded and often cut-toothed or pinnatifid; racemes short, dense, crowded into an oblong spike; calyx-lobes linear; corolla blue.—Shores of L. Superior, thence north and westward.
5. HYDRÒLEA, L.
Calyx 5-parted. Corolla short-campanulate or almost wheel-shaped, 5-cleft. Filaments dilated at base. Styles 2, distinct. Capsule globular, 2-celled, with very large and fleshy many-seeded placentæ, thin-walled, 2–4-valved or bursting irregularly. Seeds minute, striate-ribbed.—Herbs or scarcely shrubby, growing in water or wet places (whence the name, from ὕδωρ, water), with entire leaves, often having spines in their axils, and clustered blue flowers.
1. H. affìnis, Gray. Glabrous throughout; stem ascending from a creeping base, armed with small axillary spines; leaves lanceolate, tapering to a very short petiole; flowers in small axillary leafy-bracted clusters; divisions of the calyx lance-ovate, equalling the corolla and the irregularly-bursting globose capsule.—Banks of streams, S. Ill. to Tex.
Order 72. BORRAGINÀCEÆ. (Borage Family.)
Chiefly rough-hairy herbs, with alternate entire leaves, and symmetrical flowers with a 5-parted calyx, a regular 5-lobed corolla (except in Echium), 5 stamens inserted on its tube, a single style and a usually deeply 4-lobed ovary (as in Labiatæ), forming in fruit 4 seed-like 1-seeded nutlets, or separating into two 2-seeded or four 1-seeded nutlets.—Albumen none. Cotyledons plano-convex; radicle pointing to the apex of the fruit. Stigmas 1 or 2. Calyx valvate, the corolla imbricated (in Myosotis convolute) in the bud. Flowers mostly on one side of the branches of a reduced cyme, imitating a spike or raceme, which is rolled up from the end, and straightens as the blossoms expand (circinate or scorpioid), often bractless. (A rather large family of innocent, mucilaginous, and slightly bitter plants; the roots of some species yielding a red dye.)
Tribe I. HELIOTROPIEÆ. Ovary not lobed; fruit separating into 2–4 nutlets.
1. Heliotropium. Corolla salver-form. Stamens included. Nutlets 1–2-celled.
Tribe II. BORRAGINEÆ. Ovary deeply 4-parted, forming as many separate 1-seeded nutlets in fruit; style rising from the centre between them.
[*] Corolla and stamens regular.