MONOPETALOUS EXOGENOUS PLANTS. 311 



* Fi^it baccate ; peduncles 1-3-^owered ; leaves A in a whorl. 



G. HISPIDIUM, Micbx. Stem much branched, slightly 

 roughened, hairy at the joints ; leaves small, rigid, lanceo- 

 late-ovate, rough on the margins and veins beneath, 

 acute; berri/ roughened, bluish black; stem l°-2° long; 

 root yellow ; flower greenish white. 



G. UKiFLORUM, Michx. Smooth ; stems mostly simple, 

 slender, erect ; leaves linear, acute, rough on the margins, 

 punctate beneath ; berry smooth, black. Dry rich soil. 

 Stems numerous, 1° high ; flowers white. 



** Fruit dry ; peduncles commonly Z~many-fiowered. 



G. TRIFIDUM, L. Stems slender, weak, smooth or rough- 

 angled, at length diffuse ; leaves 4-6 in a whorl, unequal, 

 varying from linear to spatulate-lanceolate, obtuse, smooth, 

 or rough on the margins and midrib, the upper ones often 

 opposite ; peduncles 1-3-flowered ; corollaAoh^^ and sta- 

 mens often 3 ; fruit smooth. (G. tinctorium, L.) Wet 

 places. Stems l°-2° long ; floivers white. 



G. ciRC^ZANS, Michx. Stems erect, smooth or nearly 

 so; leaves large (l'-l|-'), 4 in a whorl, oval, mostly obtuse, 

 3-nerved, pubescent; peduncles forking, then spreading 

 and spike-like ; fruit bristly with hooked hairs, nearly ses- 

 sile, nodding. Dry open woods. Stems several, sparingly 

 branched, 1° high ; flowers purple. 



SPEEMACOCE, L. 



Calyx 2-4-parted, persistent; corolla salver-shaped or 

 funnel-shaped, 4-lobed, valvate in the bud; stamens 4, 

 inserted on the throat of the corolla; stigma simple or 

 2-Q\Qit\ fruit composed of two 1-seeded carpels, separating 

 from the apex downward, one of them closed by the parti- 

 tion, the other open ; seeds grooved on the inner face. — Low 



