HKLIOTROPIUM. XCIV. BORR AGIN ACE .<E. 435 



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

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

 Flo\vers very small, white. June. 



12. ECHINOSPERMUM. Swartz. 



Gr. %ivos, the sea-urchin, (nrep/m, 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. LAPFULA. Lehm. (Rochelia. Roem. Cynoglossum. Scop.) 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. 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 1' by 1 2", sessile. Flowers very small, blue. Jl. 



13. CYNOGLOSSUM. 



Gr. KviiiVj a dog, yAo<rera, 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. Hou7id's-tongue. 



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

 petiolate, cauline ones sessile ; sta. shorter than corolla. 7|- An erect, downy 

 plant, of a dull green colo^ 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 or es 6 10' by 1 2', tapering into a long, attenuated base 

 (winged petiole "), 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. MORRISONI. DC. (Echinospermum Virginicum. Lehm. and 1st edit.) 

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

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

 hooked prickles. 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, 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. HELICTROPEJE. Ovary bearing a simple, terminal style 

 Fruit diyish, drupaceous, partible. Seeds without albumen. 



14. H EL I O T R O P" I U M. Tomo. 



Gr. fi\io$, the sun, rprta), 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 

 3T* 



