450 SCROPHULAEIACEAE (FIGWORT FAMILY) 



1. Synthyris wyomingensis (A. Nel3.)' Heller, Muhl. 1 : 5. 1900. Steins 

 puberment or softly pubescent, 1-2.5 dm. high: radical leaves petioled, 

 broadly ovate to oblong, crenate-dentate, rounded^ or subcordate- at base, 

 mostly obtuse at apex; cauline leaves sessile, small, mostly acute: bracts 

 broadly lanceolate to nearly linear: calyx anteriorly cleft to the base, pos- 

 teriorly into 2 or 3 lobes to about the middle, the lobes either entire or. (if only 

 2) vrith 2 tooth-like, lobes: corolla, wanting: stamens conspicuous; filaments 

 twice the length of the calyx: capsule emarginate, large, turgid, puherulent, 

 protruding from the cleft side; of i the calyx. S. rubra,. — :Wyoming and .probr 

 ably in Colorado and Utah. ;, , u ' . 



la. Synthyris wyomingensis gj^mnocarpa A. Nels. Similar but smaller, 

 with shorter spike: sepals mostly reduced to the 2 dorsal ones, these distinct or 

 somewhat united: capsule orbicular, much flattened at maturity, naked ex- 

 cept for the bract and sepals closely approximated on the posterior angle. 

 {Wvlfenia gymnocarpa A.; Nels. .Bull, Torr. Bot. Club 25; 282. 1898.)— West- 

 ern Wyoming, and Coloradqj , , , , , 



,2. Synthyris pinnatifida Wats. Bot. King's Exp. 227. pi. 22. 1871. Sqme- 

 what villous: radical leaves long-petioled,, broadly ovate in outline, pinnately 

 divided, the lowest of the 3 or 4 pairs of lobes nearly distinct, the upper con- 

 fluent, all laciniately pinnatifid and the segments laciniately toothed: flowering 

 stems 8-16 cm. high, usually exceeding the leaves, naked below: raceme 

 2-5 cm. long, densely flowered above; pedicels shorter than the subtending 

 ovate or oblong, toothed or entire bracts: calyx-lobes oblongy mostly obtuse: 

 corolla whitish, nearly twice longer than the calyx, the lower Up deeply 3- 

 ISbed; the upper one entire: capsAile elliptiialj turgid. — On rocky ridges m the 

 high mountains; Idaho to Utah, Wyoming, and Montana. " 



3. Synthyris laciniata (Gray) Rydb. Mepi. N.Y, Bot. Gard. 1: 353. 1900. 

 Size and habit of the preceding: leaves orbicular or reniform, never pinnatifid, 

 but laciniately cleft to the middle or less. — Same range. 



4. Synthyris alpina Gray, Am. Journ. Sci, II, 34: 251. 1862. Somewhat 

 woolly, becoming smooth: radical leaves elliptic or oval, sometimes subcor- 

 date, closely crenate, 3-5 cm.: long, on slender petioles: scape 5-15 cm. high, 

 leafy-bracted: spike short, dense, in flower 2-6 cm. long: sepals lanceolate,, 

 villous on the outside toward the edge with long hairs, also the bracts: corolla 

 2-parted, upper Up very broad, erose; the lower much smaller,' 2-3-parted; 

 lobes narrow, purpUsh-blue: stigma capitate: stamens exserted.^High alpine 

 in Colorado and southern Wyoming. 



5. Synthyris plantaginea Eenth. in DC. Prodr. 10: 455. 1846. Woolly- 

 pubescent, becoming smooth: radical leaves oblong, crenate, thick, coriaceous,, 

 7-15 cm. long, abruptly nari'owed at base'knd somewhat decurreiit on the 

 petiole, somewhat pilose on tiie veins and ribs; petioles 5-8 cm. long: scape 

 2-3 dm. high, furnished with numerous oblong or orbicular, nearly sessile 

 bracts: flowers in a long, dense spike, in fruit 10-15 cm. in length: fruit scarcely 

 exceeding the round-ovate persistent bracts. — Subalpine woods; Colorado 

 to New Mexico./ 



6; Synthyris Ritteriana Eastw. Proc. Cal. Acad. Sci, III. 1: 2g.., 1898. 

 Sparingly pubescent; scape stQut,, nearly 3 dm. high,, foUaceous: leaves rad- 

 ical, 8-10 cm. long, oblong-elliptical; obtuse, crenate; petioles stout, 8-rl2 cm. 

 long; bracts of the scape alternate, ovate-aciuninate, , sessile by a subcordate 

 base: floral bracts rhomboidal, acuminate, tapering at ba,se to a shoiit petiole; 

 flowers white, in a spike 5 cm. long: calyx of 3 divisions 4 mm. long, each 

 orbicular to obovate, entire, toothed, or cleft, obtuse or acute, fringedi with 

 white hairs: corolla of 2 divisions, surpassing the calyx by 2 mm.; upper part 

 broadly obovate, acute, ciliate;, lower variously cleft with 2-3-laciniate, 

 ciliate divisions: filaments inserted at^thebase of the corolla, surpassing it by 

 2 mm. (iS. flavescens A. Nels. Bot. Gaz. 34: 33. 1902.)— Mountains of Col- 

 orado. 



6a. Synthyris Ritteriana obtusa A. Nels. 1. c. Leaves broad and obtuse: 

 bracts of Bcape orbicular, cuspidate; bracts of spike narrowed but not petioled: 

 calyx 2-Iobea to tbe base, one or both lobes sometimes cleft into very unequal 



