MACLOSKIE I PORTULACACE^E. 379 



^3. Leaves opposite. Flowers sympetalous, with 2-3 stamens and 3 ovules. Small aquatics. 



Sepals 3. 3. Montia. 



64. Stamen i. Capsule 2-valved, with 1-2 black seeds. 5. Monocosmia. 



A2. Ovary more or less inferior. Stamens 4-many. Seeds numerous. Fleshy herbs with 

 alternate leaves. 4. Portulaca. 



i. CALANDRINIA H. B. & K. 



Leaves alternate or cespitose. Flowers solitary and long-stalked, or 

 axillary, or in terminal racemes or heads. Sepals 2, ovate. Petals gen- 

 erally ephemeral. Stamens 5-many. Ovary free, many-ovulate. Style 

 3-cleft or sulcate. Seeds reniform. 



Species 75, W. Amer. and Austral. 



KEY TO THE SPECIES. 

 A. Leaves linear. 



b. Scapes I -flowered. Plants glabrous ; flowers purple. rupestris. 



62. Scapes i -3 -flowered, sepals fimbriate. Plants viscous. patagonica. 



3. Flowers corymbed. Sepals trifid. trifida. 



64. Flowers capitate. Sepals 3-toothed. prostrata. 



A2. Leaves lanceolate, all radical. Scapes i -flowered. densifolia. 

 A$. Leaves narrow-oblong, attenuate petiolate, and sessile on stem. Flowers crowded on ends 



of the branches. fasciculata. 



I. C. DENSIFOLIA Phil. 



Cespitose, small. Leaves lanceolate, all radical, densely crowded, 

 acutish. Peduncles radical, in fruit twice as long as the leaves. Calyx 

 glabrous, its leaves ovate, entire, acute. Capsule as long as the calyx. 

 Seeds smooth, shining. 



(An dine elevations by Coquimbo.) Cordilleras of S. Patagon., on 

 damp ground (J. B. Hatcher; in fruit Feb. 6, 1897). Rootstock as thick 

 as a crow-quill. Leaves 20 by 3 mm. ; pedicels i -flowered ; petals 4, ovate, 

 subacute, twice as long as the sepals, thin-margined. 



2. C. FASCICULATA Phil. 



Glabrous. Stem erect, branching, 10 cm. high. Leaves narrow, ob- 

 long, attenuately petiolate ; the cauline few and subsessile. Flowers 

 crowded on the ends of the branches, sessile. Bracts large, orbicular, 

 mucronate. Sepals subscarious, unequal, the outer larger and orbicular ; 

 the inner ovate. Seeds subpunctate, shining. 



(Andes of Peru.) 



