286 SCROPHULARIACE^E. (FIGWORT FAMILY.) 



the calyx-lobes : the corolla yellow, or white with purple or rose-color, often 

 much surpassing the calyx. 



* Corolla with lip rather obscurely saccate, and with conspicuous mostly erect lobes; 



the galea broadish, obtuse. 



1. O. pallescens, Gray. Cinereous-puberulent, not hairy: leaves 3 to 

 5-parted into linear lobes, or the lower entire : bracts similar with dilated 

 base, or the upper with shorter obscurely whitish or yellowish lobes : calyx 

 deeply 2 cleft, with broad lobes merely 2-cleft at apex : corolla yellowish, over 

 a half-inch long. Am. Jour. Sci. n. xxxiv. 339. From the mountains of 

 N. W. Wyoming to E. Oregon. 



* * Corolla with simply saccate lip inconspicuously or obsolete!;/ 3-toothed, and 



moderateli/ smaller ovate-triangular galea ; its small tip or mucro usually some- 

 what inflexed or uncinate, 



- Bracts strikingly different from the leaves, much dilated, entire or the lower 3 to 

 b-lobed, the summit of the middle lobe purple : corolla yellow. 



2. O. linearifolius, Beuth. Strict, branching at summit, sparsely hir- 

 sute or hispid, especially the margins of the 3 to 5-lobed bracts : calyx half the 

 length of the corolla, its lobes with a pair of elongated subulate teeth : corolla 

 | inch long, narrow ; galea with small unciuate tip a little surpassing tbe lip. 

 0. tcniiifolius of the Synopt. Fl., in part. From the mountains of Mon- 

 tana to Oregon. 



i- - Bracts herbaceous, not colored, less or little different from the leaves, all 

 3-. (rarely 5-) cleft. 



3. O. luteUS, Nutt. Pubescent and hirsute, sometimes viscid : stem strict, a 

 span to a foot high : leaves from linear to lanceolate, occasionally 3-cleft, 

 about equalling tbe flowers: corolla golden yellow, less than a half-inch long, 

 2 or 3 times the length of the calyx; tip of galea obtuse and straight. Plains, 

 from N. Minnesota to Colorado and westward. 



4 O. Tolmiei, Hook. & Arn. Puberulent, a span or two high, loosely 

 branched : leaves narrowly lanceolate-linear, chiefly entire : bracts of tbe small 

 and short spikes little dilated, often 3-cleft, the upper shorter than the flowers : 

 corolla bright yellow, half-inch long, 3 or 4 times longer than the calyx ; minute 

 tip of galea inftexed. In the Wahsatch Mountains of Utah and northward. 



14. CORDYLANTHUS, Nutt. 



Branching annuals, with alternate and narrow leaves, either entire or 3 to 

 5 parted, and mostly dull-colored flowers in small terminal heads or clusters, 

 or more scattered along the branches : the bracts and calyx not colored. 



* Calyx diphyllous: corolla 2-lipped at summit: Jlowers short-ped uncled or sub- 



sessile. 



1. C. ramOSUS, Nutt. A span or two high, diffusely much branched, 

 cinereous-puberulent : leaves filiform, all but the lower usually 3 to 7-parted : 

 flowers few in the small terminal heads or upper axils : corolla dull yellow, 

 barely a half-inch long. Dry regions from Wyoming to W. Nevada and 

 Oregon. 



