E^TXIXG-PRIMROSE FAZ^HLY 599 



wiiite, pink, or yellow. Stamens 8. Hypanfhhim jHtxhiced beyond the oTaay 

 into a slightly funnelform tube. Stigmas with 4 linear lobes. ' Capsule short, 

 sharplj- 4-angled or 4-winged above, few-seeded. 



Leaves strigose-cazieBoent. 1. L,. brachycarpa. 



Leaves green. glalRtMiB or pobemleait. witb dUate margjas. 2. L. fla-pa. 



1. L. bracbycazpa (A. Gray) Britton. Cespitose acajilescent perennial, 

 canescent-strigose throiighout; leaves oblanceolate or spatulate. sinuate-pinna- 

 tifid to entire, 5-15 cm. long: tube of the hypantiiiuni 1-1.5 dm. long; petels 

 yeEow, turning rose-colored, 4-5 cm. long; capeole 15-30 mm. long, canesoent. 

 Oenothera brachycarpa A. Gray. O. Hoirardii M. E. Jones. Plains and hills: 

 Kans. — Tex — N.M. — Utah. Plain — Submont. Jkl^-JL 



2. L. flava A. Xels. Acaulescent perennial; leaves oblong-lanoeolate in out- 

 line, deeply runcinate-pinnatifid, 15-25 cm. long, ^abroos or a little pubescoit 

 on the margins; tube of h37pantliium 4-7 cm. long; petals veDow, turning pink, 

 12-18 mm. long; capsule 2-3 cm. long, narrowh- winged. OeTwihera trilcba 

 ecrisiaia M. E. Jon^. Vallej-s: Sask. — Xeb. — Colo. — C^if. — Wash. Submoni. 

 — Mord. Je-Au. 



14. GAURELLA Small. Spotted Peimbose. 



Low caulescent perennials, with branching stems. Leaves alternate, entire 

 or distantly toothed. Flowers perfect, axillart-, sse^ile. H.%-j?anthium produced 

 beyond the ovarj- into a slightly fxmnelform tube. Sepals elongate, reflexed. 

 Petals -L obovate, white or pink, ^mtted or striped with red. Style short, 

 slightly clavate; stigma with 4 linear lobes. Capsule short. 4-aiigled. with a 

 short curved beak. Seeds few, angled, striate. 



1. G. canescens (Torr. <t Frem.) A. Xels. Cespitose perennial: sterr.? 1-5 

 dm. long, 5*' : z" .' branched, decumbent or ascending, strigose; leaves liir_>r :li:e 

 or oblong ^ :nm. long, rejiand-Hdenticnlate or entire; petals white. :ur:_i^g 

 pink, spo;;.^. ..r^out 1 cm. long; capsule 8-10 mm. long, angled. Oeii.^>:.r..ira 

 canescens Torr. <t Frem. O. guUulaia Geyer. Prairies: Xeb. — Tex. — X.M. — 

 Colo. Plain. 



15. GALPINSIA Britton. 



Suffruticoee perennials, with :.rj:. :.ri stems. Leaves alternate, narrow. 

 Flowers perfect, arillarj- to foliaoeous bracts. H^-panthium produced beyond 

 the ovar\- into a more or les funnelform tube. Sejjals 4, reflexed. Pet^ 4, 

 yellow. Stamens 8. Stigma disk-like, entire. Capsule cylindric or S(Mne«diat 

 fusiform, narrowed at the base, more or k^ curved. Seeds often tuben^ilajbe. 



Whole plant strigoee-cinereaas. 1. G. JawamdnJaefaUa. 



Stem ^id hypanthinm more or less faiisote. 2. G. inierior. 



1. G. lavandulaefolia (T. & G.) Small. Cespitose perennial, with a woody 

 base: ?■ r:_= 1-2 .Im. hig^, decumbent or ascending, eanesoent; leaves numerous, 

 crowcv ,r or linear-spatulate, entire or nearly so, finely pubescent: hypan- 

 thiuni - .Ay dilated; tube 3-4 cm. long: j>etals 13-19 mm. long; caj^ule 

 2-2.5 : -J. Oenothera lavanduIaefoUa T. <t G. Plains and prairies: Nd>. — 

 Kan.?. — IV X. — Ariz. — ^Wyo. Plain — Son. My-JL 



2. G. interior Small. Cespitose perennial, with a wood^^ base: stems 2-3 

 dm. high, hirsute as well as puberulent; leaves oblong, 1-2.5 cm. long, entire, 

 partly clasping; hypanthium elongate, gradually dilated, 2-3.5 crn. long: petals 

 1.5-2.5 cm. long; capsule 1.5-2 cm. long. Plains and prairies: Xeb.^-Kans. — 

 Tex. Plain. My-Au. 



16. MERIOLIX R:v:. 



Biennial or perennial herbs, wiiL briiiioiic-d si^ms. sometime sufirutioose at 

 the base. Leaves alternate, narrow or sharply serrate. Flowers perfect, regu- 

 lar, axillary. Hypanthium produced beyor. " " jvar\-. funnelform, the free 

 portion rather short. Sepals 4, keeled on the , Petals yellow, often gjotted 



at the base. Stamens S. Stigma disk-like, 4-TooThed. Capsule linear, 4r^ai^ed, 

 sesile. Seeds numerous, Icngitudinalh- grooved. 



