9-13 mm. long, the throat spotted with red below the lower lip, the lobes erose 

 or somewhat laciniate; style puberulent or glabrous; capsule oblong, less than 

 half as long as calyx, compressed; seeds brownish, oval, sometimes 3-sided, 

 longitudinally striate and often bearing stiff scattered hairs. 



In permanently wet places such as seepage cliffs and ledges in mts. of the 

 Tex. Trans-Pecos (Presidio Co.). N. M. (Catron and Grant cos.) and Ariz. 

 (Pima CO.), May-Aug.; from w. Tex. and Ariz, to n. Mex. 



10. Mimulus glabratus H.B.K. 



Low perennial, glabrous or nearly so, stoloniferous or with creeping stems 

 that root freely at the lower nodes; stems usually numerous, hollow, weak, to 

 75 cm. long; leaves broadly ovate to suborbicular. to 7 cm. long and 6 cm. wide, 

 irregularly dentate, sometimes shallowly lobed at the base, 3- or 5-nerved. the 

 basal leaves cuneate to subcordate or with margined petioles at base, upper leaves 

 subcordate at the sessile base; flowers axillary, mainly on upper part of stem; 

 pedicels slender, glabrous or pubescent, longer or shorter than leaves; calyx 

 campanulate. often spotted or tinged with red, to 1 cm. long, glabrous or pubes- 

 cent, larger in fruit, the broad short unequal teeth spreading; corolla tubular, 

 to 15 mm. long, the tube slender, lower lip heavily bearded, middle lobe much 

 longer than the lateral ones; style glabrous; capsule oblong, rounded, constricted 

 at the base but not stipitate, shorter than the calyx tube; seeds oval, longitudinally 

 striate. Incl. var. Fremontii (Benth.) Grant. 



In shallow water of streams or muddy places with the stems often floating or 

 creeping and more or less procumbent, in Okla. (Alfalfa and Love cos.), in Tex. 

 on the Edwards Plateau and in the Trans-Pecos, N. M. (Otero, Mora, Lincoln 

 and Colfax cos.) and Ariz. (Apache and Coconino, s. to Cochise, Santa Cruz and 

 Pima COS.), throughout the year; from Ont. and Man., s. to Tex., Nev. and Mex. 



11. Mimulus guttatus DC. Fig. 697. 



Annual or perennial herb; stems simple or branched, erect or declined, 1-6 

 dm. long; herbage glabrous or somewhat pubescent; leaves elliptical, irregularly 

 serrate to dentate or the blades lobed at base, the lower leaves short-petioled, 

 the upper ones sessile; flowers in terminal bracteate racemes on slender pedicels; 

 calyx campanulate. folded on the angles, the teeth connivent in age; corolla 

 yellow, with reddish-brown spots, sometimes conspicuously spotted. 2-4 cm. long, 

 the upper lip of 2 erect lobes, the lower lip of 3 reflexed lobes, with a con- 

 spicuous palate closing the throat; capsule ovate, flattened, 2-celled, incompletely 

 partitioned. Incl. var. puberulus (Greene) Grant. 



The most common and most variable species of Mimulus in our area, occurring 

 almost everywhere where water stands on rich soil, principally in bogs, swamps, 

 marshes, and stream banks, widespread in N. M. and Ariz., June-Sept.; Mont., 

 s. to Mex. and n. to Alas. 



12. Mimulus nasuhis Fisch. 



Puberulent to nearly glabrous annuals, rarely pubescent; stem usually branched 

 from the base, erect or ascending. 1-6 dm. high, quadrangular, frequently winged, 

 fistulous when growing under very favorable conditions; leaves 3- or 5-nerved, 

 round-ovate or oblong, to 1 1 cm. long, nearly as broad, irregularly and coarsely 

 dentate or lobed, often with additional small lobes at the base of the blade, more 

 or less tinged with red on the lower surface, lower leaves with long broad clasping 

 petioles, the upper leaves sessile; inflorescence racemose; pedicels nearly glabrous, 

 2 to 3 times as long as the mature calyx, erect, becoming strongly recurved in 



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