362 BORRAGlNACE^. (BORAGE FAMILY.) 



§ 2. EUPLOCA. Fruit didtjmous, the 2 carpels each splitting into two l-seeded 

 nutlets ; style elongated ; flowers scattered, large. 



3. H. COnvolvulaeeum, Gray. Low annual, strigose-hirsute and 

 hoary, much branched; leaves lanceolate, or ovate or even linear, sliort- 

 petioled ; flowers opposite the leaves and terminal; corolla 6" broad, the 

 strigose-hirsute tube about twice as long as the linear sepals. — Sandy plains. 

 Neb. to W. Tex. A showy plant, with sweet-scented flowers. 



§ 3. TIARIDIUM. Fruit 2-lobed, separating into two 2-celled 2-seeded carpels, 

 with sometimes a pair of empty false cells ; style very short ; flowers in 

 bractless scorpioid spikes. 



H. txDiCDM, L. Erect and hairy annual; leaves petioled, ovate or oval 

 and somewhat heart-shaped ; spikes single ; fruit 2-cleft, mitre-shaped, with 

 an empty false cell before each seed-bearing cell. (Heliophytum Indicum, 

 DC.) — Waste places, along the great rivers, from S. Ind. to Mo., and south- 

 ward. (Adv. from India.) 



2. CYNOGLOSSUM, Tourn. Hound's-Tongue. 



Corolla funnel-form, the tube about equalling the 5-parted calyx, and throat 

 closed with 5 obtuse scales ; lobes rounded. Stamens included. Nutlets de- 

 pressed or convex, oblique, fixed near the apex to the base of the st\'le, rough- 

 ened all over with short barbed or hooked prickles. — Coarse herbs, with a 

 strong scent and petioled lower leaves ; the mostly panicled (so-called) racemes 

 naked above, usually bracted at base. Fl. all summer. (Name from kvwv, a 

 dog, and yKaxrcra, tongue ; from the shape and texture of the leaves.) 



C. officixIle, L. (Common Houxd's-Toxgle.) Biennial; clothed icith 

 short soft hairs, leafy, panicled above ; upper leaves lanceolate, closely sessile 

 by a rounded or slightly heart-shaped base; racemes nearly bractless; corolla 

 reddish-purple (rarely white) ; nutlets flat on tlie l)road upper face, somewhat 

 margined. — Waste ground and pastures ; a familiar and troublesome weed ; 

 the large nutlets adhering to the fleece of sheep, etc. (Nat. from Eu.) 



1. C. Virginicum, L. (Wild Comfrey.) Perennial; roughish icith 

 spreading bristly hairs; stem ^\m^\e, few-leaved (2-3° high); stem-leaves 

 lanceolate-oblong, clasping by a deep heart-shaped base ; racemes few and 

 corymhed, raised on long naked peduncles, bractless ; corolla pale blue ; nutlets 

 strongly convex. — Open woods, Ont. and Sask. to Fla. and La. 



3. ECHINOSPERMUM, Lehm. Stickseed. 



Corolla salver-form, short, imbricated in the bud, the throat closed with 5 

 short scales. Stamens included. Nutlets erect, fixed laterally to the base of 

 the style or central column, triangular or compressed, the back armed all over 

 or with 1 -3 marginal rows of prickles which are barbed at the apex, otherwise 

 naked. — Rough-hairy and grayish herbs, with small blue to whitish flowers 

 in racemes or spikes ; ours annuals or biennials, flowering all summer. (Name 

 compounded of ex^vos, a hedgehog, and airepfxa, seed.) 



* Racemes panicled, leafy -bracteate at base ; slender pedicels recurved or de- 

 flexed in fruit; calyx4obes short, at length reflexed ; biennial, not hispid. 

 1. E. Virginicum, Lehm. (Beggar's Lice.) Stem 2 - 4° high ; radi- 

 cal leaves round-o^■ate or cordate, slender-petioled ; cauline (3 - 8' long) ovate- 



