7 H. angustifolia Mx. Slender, tall, strictly erect; lvs. narrowly linear, 1-veined; fls. very numerous, short-pedicelled, in compact, terminal cymules; cal. lobes subulate; caps, obovoid or top-shaped. - Ц Prairies and bottoms, 111. to La. Sts. slightly 4-angled, nearly terete, 10' to 2f high, branching. Lvs. 12 to 18" long, acute, attenuate at base, 1" wide. Cor. white, hairy inside, 2" long. Jn., Jl." (Hedyotis stenophylla T. & G.)

9. OLDEN LAN' DI A, L. In memory of Oldenland, a German physician and botanist, who died at the Cape of Good Hope.) Calyx 4 or 5-lobed, persistent; corolla funnel-form, with a short tube, little longer than the calyx, 4 to 5-lobed; stamens 4 to 5 ; style short or 0, stigmas 2 ; capsule wholly adherent to and inclosed in the calyx tube ; seeds very numerous and minute (40 to 60 in each cell.) - Herbs erect or prostrate. Stip. with 2 to 4 subulate points each side. Fls. small, axillary, white.

1 O. glomerata Mx. Creeping Green-head. St. assurgent, branching; lvs. ovate-lanceolate, pubescent, narrowed at the base into a short petiole, or sessile; fls. glomerate in the axils and terminal, cor. shorter than the, leafy cal. teeth. - A plant varying in size from 1 to 2' to as many feet, found in swamps, etc, N . Y. to La. Lvs. 1/2' in length, apparently connate from the stipules adhering to each side of the "petiole. Stip. 2-cleft into narrow, subulate divisions. Cal. in 4 deep, leafy divisions, which are much longer than the white, rotate corolla. Stam. nearly exserted. Sty. very short. Caps, opening crosswise. Jn. - Sept. (Hed-yotis Ell.)

2 O. Boscii. St. erect, diffusely branched; lvs. lance-linear, acute, attenuated to a petiole, 1-veined; stip. 2-pointed each side; fls. axillary, sessile, 1 to 3 together; cor. shorter than the triangular-subulate calyx teeth, which are shorter than the roundish capsule. - Ц. Borders of ponds, etc, Car. to La. Sts. 6 to 10' high. Lvs. 1' by 1 to 2". Cor. purplish. Jl. - Sept. (Hedyotis DC.)

3 O. Halaei, with pentamerous fls., a prostrate, succulent perennial, found by Dr. Hale on the Red River, La., may yet be found E. of the Miss.