MALVACEAE. 231 



3. Sphaeralcea Crandallii Rydb. ^Mountains of Colo. — Alt. about 7000 ft. — 

 Steamboat Springs. 



4. Sphaeralcea rivularis (Hook.) Torr. (Malva rivularis Hook.; Sphaeral- 

 cea acerifolia Nutt.) Along streams from Alb. and B. C. to S. D., Colo, and 

 Nev. — Four-Mile Hill, Routt Co. ; Ragged Mountain, Gunnison Co. ; Buffalo 

 Pass ; Park Range ; Fish Creek Falls. 



5. Sphaeralcea grandiflora Rydb. Mountains of Colo. — Alt. 7000-9000 ft. — 

 Mesa Verde; west of Ouray. 



6. SIDA L. 



I. Sida sagittaefolia (A. Gray) Rydb. {Sida Icpidota sagittaefolia A. 

 Gray) Plains from Colo, to Tex. and Ariz. ; also in Mex. — " Southern 

 Colorado." 



7. ABUTILON Gaertn. Velvet-leaf, Indian Mallow. 



1. Abutilon parvulum A. Gray. In dry soil from Colo, to Tex. and Ariz. 

 — Canon City. 



Order 34. HYPERICALES. 



Styles wanting; stigma introrse ; ours small water-plants. 87. Elatinaceae. 

 Styles present ; stigmas capitate or nearly so. 

 Styles in ours distinct. 



Sepals persistent, united into a tube ; leaves not pellucid-dotted. 



88. Frankeniaceae. 

 Sepals distinct ; leaves pellucid-dotted. 89. Hypericaceae. 



Styles wholly united. 



Corolla regular or nearly so ; stamens 8. . 90. Cistaceae. 



Corolla irregular; one petal spurred; stamens 5. 91. Violaceae. 



Family 87. ELATINACEAE Lindl. Water-wort Family. 



I. ELATINE L. Water-wort, Mud Purslane. 

 Leaves oblanceolate ; flowers usually 3-merous. i. E. triandra. 



Leaves obovate ; flowers 2-merous. 2. E. americana. 



1. Elatine triandra Schkur. In shallow water from Ills, and Wyo. to Colo. 

 —Platte River. 



2. Elatine americana Arn. In mud and shallow water from Que. and B. C 

 to Va., Colo, and Calif. — Platte River. 



Family 88. FRANKENIACEAE. 

 1. FRANKENIA L. 



I. Frankenia Jamesii Torr. On saline plains from Colo, to Tex. and Son- 

 ora. — Bluffs about Pueblo ; Rocky Ford, Otero Co. ; Caiion City. 



Family 89. HYPERICACEAE Lindl. St. John'.s Wort Family. 



I. HYPERICUM L. St. John's Wort. 



Petals more than twice as long as the sepals ; both usually margined with black 

 glands. I. H. formosum. 



Petals slightly exceeding the sepals ; black glands none. 2. H. majtis. 



