Heliotropium. XCIV. B0RRAG1NACE.(E. 435 



the lower ones oblanceulate, obtuse, tapering to a short petiole. Racemes revo- 

 lute at the end, not secimd, short at first, but arising at length 6', 8', or even 12'. 

 Flowers very small, white. June. 



12. ECHINOSPERMUM. Swartz. 

 Gr. c^ivoi, the sea-urchin, (nrcp^a, seed; from the character. 



Calyx 5-parted ; corolla hypocrateriform, orifice closed with con- 

 cave scales ; seeds echiuate, compressed or angular, fixed to a central 

 • column. — Herbs erect. Lvs. oblong or Unccvr. Rac. bradecl. Pedicels 

 short., erect. 



E. Lappula. Lehm. (Rochelia. Roc^n. Cynoglossum. Scop.) Burr-seed: 

 SI. branched above ; ^^5. lanceolate or linear-lanceolate, hairy ; cor. longer 

 than the calyx, the border erect-spreading ; ach. each with 2 rows of hooked 

 prickles on the margin. — ® An erect herb, in dry soils, roadsides, N. States to 

 Arc. Am. Stem having a dry, grayish aspect Irom its dense hairs, about a foot 

 high, undivided except at tlie top where it branches into a kind of panicle. 

 Leaves 1' by 1 — 2", sessile! Flowers very small, blue. Jl. 



13. CYNOGLOSSUai. 



Gl'. Kvav, a dog, y^otKra, tongue ; from the form of the loiig, soft leaves. 



Calyx 5-parted ; corolla short, infundibuliform, vaulted ; orifice 

 closed by 5 converging, convex scales ; acheuia depressed, fixed late- 

 rally to the style. — Cor. blue, purple or white. 



1. C. OFFICINALE. Ilmmd's-tongue. 



Silky-pubescent ; lvs. lanceolate, acute, radical ones altern.ate at the base, 

 petiolate, cauline ones sessile; .'to. shorter than corolla. — If. An erect, downy 

 plant, of a dull green color, 18 — 20' high, and emitting a disagreeable smell, 

 which several dislinguished botanists have compared to the smell of young 

 mice ! Grows in waste grounds and roadsides. Stem erect, hairy, 1 — 2f high. 

 Leaves hoary with soft down on both sides, entire, upper ones clasping, with 

 broad bases, lower nr es 6 — 10' by 1 — 2', tapering into a long, attenuated base 

 (winged petiole'?), jiointed at apex. Clusters terminal, panicled, recurved at 

 the end. Flowers with a downy calyx and a dull red corolla. Calyx leaf-like 

 in fruit. Seeds rough, with hooked prickles. Jl. ^ 



2. C. ViRGiNicuM. (C. amplexicaule. Mr. and 1st edit.) 

 Hirsute-pilose ; lvs. oblong-oval, acute, upper ones clasping, cordate at 



case ; corymb terminal, leafless, on a long peduncle. — %. Inhabiting woods and 

 thickets, Vt. ! to Md. ! W. to 111. ! rare in N. Eng. A very hairy plant, 2f high, 

 simple, bearing at the top of its leafless summit, a small, panicled corymb of 

 pale purple flowers. Radical leaves 5 — 6' long and half as wide. Calyx and 

 pedicels very hair3^ Jn. 



■ 3. C. MoRRisoNi. DC. (Echinospermum Virginicum. 'Lehn. and 1st edit.) 

 Virginian Mouse-ear. — St. much branched ; lvs. oblong-lanceolate, acumi- 

 nate, scabrous above; rac. divaricate, dichotomous; fruit densely covered with 

 hooked prickles. — (T) An erect, hairy weed, in rocky grounds and rubbish, (Jan. 

 to Flor. Stem furrowed, 2 — 3f high, with many slender, remote, wide-spread 

 branches, each terminating in a centrifugal, racenftse inflorescence. Leaves 

 entire, remote, large (3 — 4' long), tapering to each end, the lower ones petioled. 

 Flowers very small, white, the pedicels nodding in fruit. Jl. 



Tribe 2. KELiIOTROPEiE. — Ovary bearing a simple, terminal style 

 Fruit dryish, drupaceous, partible. Seeds without albumen. 



14. HELIOTROPIUM. Touuo. 



Gr. i'i\io;, the Sim, Tpeno), to tuni ; Uic fiowers were saKl to be always turned towards the sun. 



Calyx 5-parted ; corolla hypocrateriform, orifice naked, limb 5-cleft, 

 with the sinuses plaited : stamens included ; stigma peltate ; acheuia 



o7* 



