PRIMULAOEAE (PRIMROSE FAMILY) 373 



persistent. Corolla hypogynous, except in Samolus in which it coheres below 

 with the base of the ovary, usually 5-parted, wanting in Glaux. Stamens as 

 many as the lobes pf the corolla and opposite to ihem, inserted on the tube or 

 base of the corolla, rarely perigynous; anthers introrse. Ovary 1-oelled, with 

 a free central placenta. Fruit capsular. 



Ovary wholly superior. 

 Corolla present. 



Scapose plants with basal leaves. 



CoroUa-lobes erect or spreading; stamens included, distinct. 

 Corolla-tube equaling or exceeding the calyx. 



Corolla-lobes obcordate or emarginate; capsule many-seeded 1. Primula. , 

 Corolla-lobes entire; capsule few-seeded (1-2) . . .2. Douglasia. 

 Corolla-tube shorter than the calyx. 



Perennials; umbel subcapitate; capsule few-seeded , .8, Drosace, 

 Anmials; umbel open; capsules many-seeded . . .4. Androsace. 



Corolla-lobes reflexed; stamei^s exserted, cpnuivent in a cone and 



somewhat monadelphous . . . . . . , 6. Dodecatheon. 



Leafy-stemmed plants. 



Flowers solitary in the axils 6. Steironema. 



Flowers in short axillary spikes .7, Naumbergia. 



Corolla wanting; calyx petaloid; leaves opposite .... 8. Glaux. 

 Ovary adnate to the calyx 9. Samolus. 



1. PRIMULA L. Pbimeose 



Perennial scapose herbs with leaves all radical and flowers umbellate or in 

 involucrate or bracted racemose whorls at the summit of a scape. Ca,lyx 

 tubular, funnelform, or campanulate, persistent, often angled, 6-lobed, the 

 lobes imbricated. Corolla funnelform or salverform, the tube longer than or 

 at least equaling the calyx. Ctamens 5, distinct, inserted on the tube of at 

 the throat of the corolla. Style liliform; stigrssi -"■ pitate. Capsule 5-valved at 

 the summit, many-seeded. ' ' 



Leaves white-mealy beneath 1. P. a;-. . -icana. 



Leaves green. 



Plants small, 3-10 cm. high . 2. P. ingustifolia. 



Plants with large leaves; scapes 1.5-4 dm. high . . ' . .3. P.'Parrvi. ' 



1. Primula americana Rydb. Bull. Ion, '-iot. Club 28: 500. IWOl.' Per- 

 ennial: leaves oblong or oblong-oblanceola'io or spatulate, ' 2-8 em. ion^, ob- 

 tuse, gradually contracted at the base, smuate-dentate or subentirej thin, 

 more or less "mealy: scape 1-2 dm. high, mealy when young; bracts 6- lO'mm. 

 long, linear-lanceolate; pedicels in flbWer little if any exceeding the bracts, 

 in fruit sometimes 2 cm. long: calyx 6-8 mm. long; lobes oblong-obtuse: 

 corolla lilac; tube 8-9 mm. long, only slightly exceeding the calyx; the lobes 

 obcordate, 2-3 mm. long. P. farinosa.^-Wet meadows; Colorado to Mon- 

 tana. ' ' 



2. Primula angustifolia Torr. Ann. Lye. N. Y. 1: 34. 1824. Small: scape 

 . 1-flowered, 3-10 cm. high, equaling or surpassing the lanceolate-spatulate 



obtuse entire short-petioled leaves: involucre of 1 or 2 minute bracts: lobes 

 of the Ulac-purple corolla obovate, emarginate 6-8 mm. long; the tube hardly 

 exceeding the narrow teeth of the oblong calyx. — Alpine in Colorado and Wyo- 

 ming. ' ■ 



3. Primula Parryi Gray, Am. Journ. Sci. II. 34: 257. 1862. Large: leaves 

 rather succulent, spatulate-oblong or oblanceolate, 1-3 dm. long, often den- 

 ticulate: scape 1.5-4 "dm. high, 3-12-flowered; bracts of the in vol" ere sub- 

 ulate: calyx ovoid-camp^nulate, glandular, commonly reddish; the lanceolate- 

 subulate lobes as long as the tube: corolla crimson-purple with yellow, eye; 

 the round, obovate lobes about 10 mm. long, emarginate or obcordate.- — A 

 handsome plant but very rank smelling; along subalpine brooks; Colorado to 

 Montana. ' ' 



2. DOUGLASIA Lindl. 



Depressed and tufted small herbs with suffrutescent or at least persistent 

 stems, imbricated or crowded leaves, and solitary or somewhat umbellate 



