70 SPRING FLORA 



1 stigma and a 1-celled ovary bearing a free-central 

 placenta. The stamens, which are opposite the corolla- 

 lobes, are sometimes monadelphous. Fruit a 2-6-valved 

 capsule. 



Inflorescence axillary and solitary 1. Glaux 



Inflorescence terminal and umbellate. 



Petals erect or spreading; stamens distinct... 2. Androsace 

 Petals reflexed; stamens somewhat mona- 

 delphous 3. Dodecatlieon 



1. GL.AUX. Saltwort. 



A low, somewhat succulent perennial with leafy stems. 

 Leaves opposite. Flowers sessile or nearly so. Calyx 5-parted; 

 pink or white. Corolla none. Stamens 5, borne on base of 

 calyx and alternate with its lobes. Capsule dehiscent by 

 valves. 



1. G. marltima L. Perennial from slender rhizomes; glabrous 

 and glaucous; usually branched; 2-8 inches high. Leaves 

 elliptical or linear-oblong; sessile. Flowers of 2 forms; in 

 one form the stamens are shorter than the pistil, in the other 

 they are longer. Wet places in' salty soil. May-August. 



' 2. AJVDROSACE. 



Low annuals or perennials. Leaves (in our species) rosette- 

 forming at base. Flowers small, in involucrate umbels. Calyx 

 persistent. Corolla salver- or funnel-form, the tube shorter 

 than calyx. Stamens distinct; included; with short filaments 

 and short, blunt anthers. Style short. 



1. A. occidentalism Pursh. Annual, from fibrous roots. Leaves 

 sessile; oblong or spatulate; obtuse. Pedicels scape-like; soli- 

 tary or numerous; very slender. Bracts of involucre oblong 

 or ovate. Calyx-teeth ovate or triangular-lanceolate and 

 acute; longer than the capsule and at least as long as the 

 calyx-tube. Corolla very small, white; shorter than the calyx. 

 Dry gravelly fields. April-June. 



3. DODECATHEON. Shooting Star; American Cowslip. 



Smooth perennial herbs. Leaves all basal, forming a loose 

 rosette. Flowers terminal on a simple, naked scape. Calyx 

 5-cleft, the divisions reflexed in flower and erect in fruit. 

 Corolla 5-cleft, the narrow rose-colored divisions reflexed. 

 Stamens borne on the throat of the corolla, exserted, their 

 filaments short; anthers erect, yellow or violet, conniving 

 around the style. 



Anthers about as long as tube of united filaments 1. D. salimun 

 Anthers at least twice as long as tube of united fila- 

 ments 2. D. pauciflorum 



1. D. salinum A. Nels. Leaves widely spreading or ascend- 

 ing. Bracts oblong or spatulate. Anthers purple with whitish 

 margins. Capsule elliptic, splitting from the obtuse summit 

 into 2 equal valves. 'Wet alkali soil. May-August. 4,500- 

 11.000 ft. 



