PORTULACACEAE. 125 



Family 50. PORTULACACEAE Reichenb. Purslane Family. 



Ovary superior. 

 Sepals 2. 



Sepals deciduous; capsule 3-valved. j. Talinum. 



Sepals persistent. 



Capsule 3-valved from the apex. 



Plants with corms or fleshy roots ; stem-leaves opposite. ■^. Claytonia. 

 Plants with slender rootstocks or annual roots. 



Stem with a single sessile pair of leaves, with an erect or ascending 



rootstock or in ours annual roots. 3. Limia. 



Stem decumbent or floating, with several pairs of stem-leaves, rooting 

 at the nodes and producing filiform runners, forming bulblets at 

 the apex. 4. Crunocallis. 



Capsule circumscissile near the base. 



Plants with fleshy roots and short caudices and numerous basal leaves. 



5. Oreoeroma. 

 Plants with globose corras and 2-3 cauline leaves. 6. Erocallis. 



Sepals 4-8. 7. Lewisia. 



Ovary partly inferior ; upper portion circumscissile, falling off with the sepals. 



8. Portulaca. 



1. TALINUM Adans. Fame-flower. 



Flowers about i cm. wide; stamens 5. 1. T. parviflorum. 



Flowers 2-3 cm ; stamens many. i;. T. calycinum. 



I. Talinum parviflorum Nutt. (T. teretifoUum Porter & Coult. ; not L.) 

 In rocky soil from Minn, to S. D., Tex. and Ariz.; also in Mex. — Alt. 4000- 

 7000 ft. — Garden of the Gods; Denver, along the Platte River; Ft. Collins; 

 Mason's river-front farm; Spring Cafion. 



.i. Talinum calycinum Engelm. In sandy soil from Ark. to Colo., Tex. to 

 N. M. — Exact locality not given. 



2. CLAYTONIA L. Spring Beauty. 



Plant with rounded corms ; basal leaves few. 



Stem leaves linear or narrowly lanceolate, i-ribbed or indistinctly 3-ribbed. 

 Leaves petioled ; corolla white. i . C. virginiana. 



Leaves sessile ; corolla pink. 2. C. rosea. 



Stem leaves broadly lanceolate, distinctly 3-ribbed. 3. C. lanceolate. 



Plants with a short caudex and a fleshy tap root ; basal leaves numerous. 



4. C. megarrhiza. 



1. Claytonia virginiana L. Around springs from N. S. and Mont, to Va., 

 Tex. and Colo. — Alt. 5000-7000 ft. — Foot-hills, Ft. Collins; Soldier^ Cafion; 

 Larimer Co. 



2. Claytonia* rosea Rydb. In rich damp soil in Wyo. and Colo. — Alt. 7000- 

 8000 ft. — Graham's Peak; hills southeast of La Veta. 



3. Claytonia lanceolata Pursh. (C Caroliniana sessilifolia Torr.) In wet 

 rich soil from Sask. and B. C. to Colo, and Calif. — Alt. up to 9000 ft. — Howe's 

 Gulch ; gulch west of Dixon Caiion ; Horsetooth Gulch ; Grand Mesa. 



4. Claytonia megarrhiza Parry. Among rock-slides, on the higher moun- 

 tains, from Mont, to Colo, and Utah.— Alt. 8000-14,000 ft. — West Spanish 

 Peak; Cameron Pass; Gray's Peak; Central City; James' Peak; Pike's Peak; 

 near Pagosa Peak; Little Kate Basin, La Plata Mountains; Como; Boreas; 



