HELIOTROPIUM. XCIV. BORR AGIN ACE ;E. 435 



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

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

 Flowers very small, white. June. 



12. ECH1NOSPERMUM. Swartz. 



Gr. e^ti/oj, the sea-urchin, <nrp//a, 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 

 shorty erect. 



E. LAPPULA. Lehm. (Rochelia. Roem. Cynoglossum. >cop.) Burr-seed. 

 St. branched above ; Ivs. 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. (I) 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. KVUV, a dog, yAoo-tro, 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. Hound's-tongue. 



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

 petiolate, cauline ones sessile ; sta. shorter than corolla. % 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. MX. and 1st edit.) 

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



oase ; 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 hairy. Jn. 



3. C. MORRISONJ. DC. (Echinospermum Virginicum. Lehm. and 1st edit.) 

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

 nate, scabrous above ; roc. divaricate, dichotomous ; fruit 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 (34' long), tapering to each end, the lower ones petioled. 

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



TRIBE 2. HEL.IOTROPEJ3. Ovary bearing a simple, terminal style. 

 Fruit dryish, drupaceous, partible. Seeds without albumen. 



14. HELIOTROPIUM. .Tourn. 



Gr. jjAtof, the sun, Tpeirw, 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* 



