MONOPETALOUS EXOGENOUS PLANTS. 395 



the base, the others remote, small, lanceolate, sessile ; joe- 

 duncles filiform, many times longer than the leaves, reflexed 

 in fruit ; corolla pale blue variegated with purple ; capsule 

 oblong linear, twice as long as the calyx. Stem 6'-12' 

 high; radical leaves 1' long; corolla 3"-4" long. 



MICRANTHEMUM, Michx. 



Calyx 4-parted, or 4-cleft ; corolla somewhat bilabiate, 

 the upper lip shorter, entire, the lower 3-lobed, with the 

 middle lobe longer; stamens 2, included; the filaments 

 with a gland-like appendage at the base ; antlier-cells di- 

 verging; style short; stigma capitate; capsule 2-valved, 

 few-seeded, the delicate partition vanishing at maturity; 

 seeds oblong, reticulate. — A small smooth perennial herb, 

 with diffuse creeping stemsy roundish opposite entire leaves, 

 and minute nearly sessile axillary white flowers. 



M. OKBICULATUM, Michx. (M. emarginatum. Ell.; He- 



mianthus micranthemoides, Nutt. ; Herpestis micrantha, 

 Ell. ? not of Pursh.) Stem 6-12' long; leaves 3"-5" long, 

 sometimes emarginate ; corolla not longer than the minute 

 d") calyx. 



VERONICA, L. Speedwell. 



Calyx 4-5-parted ; corolla wheel-shaped, or salver-shaped, 

 4-5-lobed ; stamens 2, one "each side of the upper lobe of 

 the corolla ; stigma capitate ; capsule compressed and ob- 

 cordate, or oblong and obtuse, septicidal or loculicidal; 

 seeds few or many, flattened or concave on the inner face. 

 — Chiefly herlSy with the stem-leaves opposite or whorled, 

 the floral ones alternate ; floiuers small, axillary, racemed 

 or spiked, blue or white. 



* Leaves wJwrkd ; corolla tubular ; capsule oblong. 



V. ViRGiNiCA, L. Perennial, smooth or pubescent ; stem 

 tall, erect ; leaves 4-7 in a whorl, lanceolate, serrate, short- 



