210 rubiacejE. (madder family.) 



fruit, bearing several remote flowers on very short lateral pedicels, reflexed in fruit; 

 lobes of the corolla hairy outside above the middle. — Rich woods : common. — 

 The var. montAnum is a dwarf, broad-leaved form, from mountain woods. 



9. G. lanceol&tum, Torr. (Wild Liquokice.) Leaves (except the 

 lowest) lanceolate or ovate-lanceolate, tapering to the apex (2' long) ; corolla glabrous : 

 otherwise like the last. — Woodlands : common northward. 



10. G. Iatif61ium, Michx. Smooth (l°-2° high); leaves lanceolate or 

 ovate-lanceolate, acute, 3-nerved below ; the midrib and margins rough ; cymes 

 panicled, loosely many -flowered, the purple flowers all on slender spreading pedi- 

 cels ; fruit smooth. — Dry woods, Mercersberg, Penn. {Prof. Porter), Maryland, 

 and southward in the Alleghanies. (Also Arkansas, Engdmann.) 



» « » * » Perennial, erect: leaves 4 or 8 in a whorl; flowers very numerous and 

 crowded in a naiTOW and compact terminal panicle, white or yellow. 



U. G. bore^le, L- (Northern Bbdsteaw.) Smooth (l°-2°high); 

 leaves in fours, linear-lanceolate, 3-nerved; flowers white; fruit minutely bristly, some- 

 times smooth. — Eocky banks of streams : common, especially northward. (Eu.) 



12. G. viRUJi, L. (Yellow Bedstraw.) Leaves in eights (or some in 

 sixes), linear, grooved above, roughish, deflexed; flowers yellow; fruit smooth. — 

 Dry fields, E. Massachusetts. (Adv. from Eu.) 



2. SPERMACOCE, L. Button-weed. 



Calyx-tube short; the limb parted into 4 teeth. Corolla funnel-form or 

 salver-form ; the lobes valvate in the bud. Stamens 4. Stigma or style 2-cleft. 

 Fruit small and dry, 2-celled, 2-seeded, splitting when ripe into 2 carpels, one 

 of them usually carrying with it the partition, and therefore closed, the other 

 open on the inner face. — Small herbs, the bases of the leaves or petioles con- 

 nected by a bristle-bearing stipular membrane. Flowers small, crowded into 

 sessile axillary whorled clusters or heads. Corolla whitish. (Name compounded 

 of (Tircpfia, seed, and axoHc^, a point, probably from the pointed calyx-teeth on 

 the fruit.) 



1 . S. glabra, Michx. Glabrous perennial ; stems spreading (9' - 20' long) ; 

 leaves oblong-lanceolate ; whorled heads many-flowered ; coroUa little exceeding 

 the calyx, bearded in the throat, bearing the anthers at its base ; filaments and 

 style hardly any. — River-banks, S. Ohio, Illinois, and southward. Aug. 



3. DIODIA, L. Button-weed. 



Calyx-teeth 2-5, often unequal. Fruit 2- (rarely 3-) celled; the crustaceons 

 carpels into which it splits all closed and indehiscent. Otherwise resembling 

 Spermacoce. Flowering all summer. (Name from Siodos, u thoroughfare ; the 

 species often growing by the wayside.) 



1. D. Virginica, L. Smooth or hairy perennial ; stems spreading (1°- 

 2° long) ; leaves lanceolate or oblong-lanceolate, sessile; flowers 1 -3 in each 

 axil ; corolla white (J' long), the slender tube abruptly expanded into the large 

 limb ; style 2-parted; fruit oblong, strongly furrowed, crowned mostly with 2 slender 

 calyx -teeth. — River-bauks, Maryland, and southward. Also naturalized near 

 Philadelphia, C. F. Parker. 



