SCROPHULARIACEiE. (FIGWORT FAMILY.) 385 



» * Sterile Jilaments slender, tipped with a little head ; leaves short (i - I' long). 



3. G, viSOOsa, JScliweiu. Clammi/-j)ul>escent or ylandular ; leaves ovate- 

 lanceolate or olnonj, acute, toothed, mostly sliorter tliaii the peduncles ; corolla 

 whitish, ijellow aithin. — Ky. to M. C. aud Ga. 



4. G. aurea, Muhl. Nearltf glabrous; leaves lanceolate or oblong4inear, 

 entire, equalUug the peduucles ; corolla golden-yellouo {^' longj. — JSaady 

 swamps, \'t. aud N. 11. to Ohio, aud south to Fla. 



§ 2. Anthers with no broad connective, the cells vertical ; sterile Jilaments tipped 

 with ahead; hairg apparenll// annual plants, with erect rigid and more 

 simple sle7us. 



5. G. pilbsa, Michx. Leaves ovate or oblong, sparingly toothed, sessile 

 (^' long) ; liowers nearly sessile ; corolla white, 3 - 4" long, scarcely exceeding 

 the calyx. — Low grouud, N. J. to Fla. and Tex. 



13. ILYSANTHES, Kaf. 



Calyx 5-parted, nearly equal. Upper lip of corolla short, erect, 2-lobed ; 

 the lower larger and spreading, 3-cleft. Fertile stamens 2, included, posterior ; 

 the anterior pair sterile, inserted in the throat, 2-lobed, without anthers; one 

 of the lobes glandular, the other smooth, usually short and tooth-like. Stigma 

 2 lobed. Capsule ovate or oblong, many-seeded. — Small and smooth annuals, 

 with opposite leaves, and small axillary (purplish) flowers, on filiform naked 

 pedicels, or the upper racemed, produced all summer. (Name from iKvs, mndy 

 or mire, and av^os flower.) 



1. I. riparia, Raf. (False Pimperxel.) Much branched, diffusely 

 spreading (4 - 8' high), or at first simple and erect, leafy ; leaves ovate, rounded, 

 or oblong, sparingly toothed or entire, the upper partly clasping; corolla 3" 

 long. (I. gratioloides, Benth.) — Wet places; common. 



14. MICRANTHEMUM, Michx. 



Calyx 4-lobed or 4- (rarely 5) parted. Corolla short. 2-lip])ed, with the up- 

 per lip considerably shorter than the lower, or 1-lipped, the upper lip obsolete ; 

 lower lip 3-cleft, the middle lobe longest. Stamens 2, anterior, the short fila- 

 ments with a glandular (mostly basal) appendage ; anthers 2-celled, didymous ; 

 no sterile filaments. Style short ; the stigma 2-lobed. Capsule globular, thin, 

 with a very delicate or evanescent partition, several -many-seeded. — Small, 

 smooth, depressed and tufted or cree])ing annuals, in mud or siiallow water, 

 witli opposite and entire rounded or spatulate sessile leaves, and minute wliite 

 or ])urplish flowers solitary in tlie axils of some of the middle leaves (usually 

 one axil floriferous, that of the other leaf sterile). (Name formed of fiiKpos, 

 small, and &w9€/j.ou, flower.) 



1. M. Nuttallii, Gray. Branches ascending, 1 -2' high; leaves obovate- 

 spatulate or oval ; peduncles at length recurved, about the length of the calyx, 

 which is bell-shaped, 4-toothed and usually split down on one side, in fruit be- 

 coming pear-shaped ; middle lobe of the corolla linear-oblong, nearly twice the 

 length of tlie lateral ones ; appendage of the stamen nearly as long as the fila- 

 ment itself; stigmas subulate. — Tidal mud of rivers, N.J. to Fla. Aug. - 

 Oct. 



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