Fin wort Family. 123 



COLLINSIA Nutt. Low delicate annuals or biennials, with opposite 

 leaves, and axillary or terminal umbellate flowers. Calyx 5-cleft. Corolla 

 2-lipped, upper lip 2-eleft, lower lip 3-lobed: tube saccate. Stamens 4. and 

 a rudimentary gland-like fifth. 



C. verna Xutt. Stem 0-18 inches high, branched, glabrous or puberulent; 

 leaves clasping, ovate or ovate-lanceolate; peduncles slender; whorU of :.'-<> 

 flowers; corolla blue and white, twice the length of the narrow calyx-teeth. 

 April-May; frequent locally; Jefferson county; reported from Lee county. 



MIMULUS L. Monkey-flower. Stems square, prostrate or erect. Leaves 

 simple, opposite. Flowers peduncled, axillary, solitary. Calyx 5-angled, 

 .Vtoothed, the upper tooth the largest. Corolla ringent, 2-lipped; upper lip 

 2-lobed, the lower lip 3-lobed. Stamens 4. Stigma 2-lobed. Capsule many- 

 seeded. 



* Corolla violet, rarely ivhltc. 



M. ringens L. Perennial; stem 1-3 feet high, glabrous; leaves lanceolate, 

 sessile, acuminate, entire or serrate, base cordate-clasping; peduncle "longer 

 than the calyx: calyx-teeth nearly equal; corolla violet, rarely white, throat 

 closed by prominent folds. Along ditches and in wet grounds: July-August: 

 common. 



N\. alatus Solander. Perennial, glabrous; stem narrowly winged at the 

 angles; leaves ovate, ovate-lanceolate or oblong, acuminate, conspicuously 

 serrate, margined-petioled; peduncle shorter than the calyx; corolla violet. 

 Wet woods; July: Appanoose and Decatur counties. 



* * Corolla yellow. 



M. jamesii T. A G. Perennial by stolons; stems spreading, diffuse, rooting, 

 smooth; leaves roundish, obscurely serrate, sessile or petioled, palmately- 

 veined: calyx ovate, oblique, upper tooth longest, inflated in fruit; edrolla 

 yellow, lower lip bearded, throat open. Calcareous springs, wet ravines: 

 May-June; Winneshiek and Des Moines counties. 



CONOBEA Aubl. Ours an annual herb, with opposite pinnateU' parted 

 leaves, and small greenish-white axillary mostly solitary flowers. Calyx 5- 

 parted. the segments narrow, equal. Corolla irregular, tube cylindric, the 

 limb 2-lipped; upper lip 2-lobed; lower lip 3-lobed. Stamens 4, didynamous, 

 included. Capsule narrowly ovoid, glabrous, many-seeded. 



C. multifida (Ms.) Benth. Stem 4-8 inches high, at length diffusely 

 branched: leaves petioled, segments linear or linear-oblong, obtuse, entire or 

 incised. Shores of streams and rivers: July-September; reported from Fay- 

 ette. Muscatine, and Lee counties. 



h|EHPESTIS Gaertn. Ours a perennial by stolons, with opposite entire 

 leaves, and small blue peduncled axillary flowers. Calyx 5-parted. Corolla 

 2-lipped; upper lip 2-iobed, lower lip 3-lobed. Stamens 4, didynamous, in- 

 eluded. Capsule oblong, obtuse, many-seeded. 



rj. rotundifolia (Mx.) Pursh. Stems creeping, spreading, simple or 

 brauched: vitlous-pubescent; leaves obovate to orbicular, palmately veined; 

 flowers 1 or - in the axils. Muddy shores: June-September; reported from 

 Scott county. {Monnicru rotund if olio Mx.) 



GRATIOLA L. Low herbs, with opposite sessile leaves, and solitary axil- 

 lary peduncled flowers. Calyx 2-bracted near the base. 5-parted, divisions 

 slender, nearly equal. Corolla 2-lipped; upper lip entire or 2-eleft, lower 

 3-cleft. Stamens included, 2 antheriferous, posterior, the anterior 2 rudi- 

 mentary and sterile or wanting. Capsule 2-celled, 4-valved, many-seeded. 



