Heliotropium. XCIV. BORRAGlNACEiE. 4St 



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

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

 Flowers very small, white. June. 



12. ECHINOSPERMUM. Swartz. 



Gr. e^tvos, the sea-urchin, cnrcpiia, seed ; from the character. 



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

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

 column. — Herbs erect. Lvs. oblong or linear. Rac. bracted. Pedicels 

 short., erect. 



E. Lappula. Lehm. (Rochelia. Roem. Cynoglossum. Scop.) Burr-seed. 

 St. branched above ; lvs. 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 from its dense hairs, about a foot* 

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

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



13. CYNOGLOSSUM. 



Gr. KV(ov, a dog, yXoaca, tongue ; from the form of the long, soft leaves. 



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

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

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



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



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

 petiolate, cauline ones sessile ; sta. shorter than corolla.— T]. An erect, downy 

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

 which several distinguished 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 ones 6 — 10' by 1 — 2', tapering into a long, attenuated base 

 (winged petiole 1), pointed 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. M.v. and 1st edit.) 

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



oase ; corvmb 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 hairy. Jn. 



3. C. MoRRisoNi. DC. (Echinospermum Virginicum. Lehm. ssiilst edit.) 

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

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

 hooked prickles. — ® An erect, hairy weed, in rocky grounds and rubbish, Can. 

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

 -branches, each terminating in a centrifugal, racemose 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. HEL,IOTROPE^.— Ovary bearing a simple, terminal style. 

 Fruit diyish, drupaceous, partible. Seeds without albumen. 



14. HELIOTROPIUM. Touru. 



Gr. fi\ioi, the sun, TpsTro), to turn ; the flowers were said 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 ; achenia 

 37* 



