34 CARYOPHYLLACEJE. (PINK FAMILY.) 



elliptic or oblong-lanceolate : flowers in a simple or compound open umbel 

 like few-rayed cyme: pedicels elongated. — Gray, Proc. Acad. Philad. 1863, 

 59, Mountains of Colorado and northward. 



•t- -t- Petals equalling or surpassing the cahjx. 



2. S. longifolia, Muhl. Stem erect, weak, often with rough angles: leaves 

 linear J acutisli at both ends, spreading: cjmes naked and at length lateral, pedun- 

 cled, many-flowered ; the slender pedicels spreading. — From Oregon to British 

 America and across the continent. 



3. S. longipes, Goldie. Shining or somewhat glaucous, verjj smooth : 

 leaves ascending, lanceolate or linear-lanceolate, broadest at the base : cijme ter- 

 minal, few flowered ; the long pedicels erect. — Colorado and northward, thence 

 eastward to Wisconsin and Maine. 



Var. Igeta, Torr. & Gray. Branches erect from creeping stems, 3 /o 6 

 inches high: leaves erect, rigid, carinate : sepals rather obtuse. — With the last, 

 iu the mountains. 



Var. Edwardsii, Torr. & Gray. Branches an inch or two high: leaves 

 ovate-lanceolate (the lowe?^. sometimes ovate), sometimes sparsely ciliate at the 

 base: sepa/s acttiisA. — Mountains of Colorado. 

 * * Bracts foliaceous. 

 ■t- Petals shorter than the sepals, or none, 



4. S. borealis, Bigelow. Ei-ect or spreading : leaves elongated, lance-linear, 

 finely scrrulute, the iutramarginal nerve very indistinct : flowers in dichotomous 

 cymes: seeds smooth. — Abundant iu the mountains of Colorado and north- 

 ward, and across the continent. 



5. S. obtusa, Engelm. Like the last, but /)ros/r(7ffi ; leaves triangular-ovate, 

 smooth-edged, 1-nerved, and the delicate reticulated veins uniting into distinct 

 intramarginal nerves: seeds (under the lens) covered ivith oblong-linear pectinate 

 tubercles. — Bot, Gazette, vii. 5. W. Colorado on the tributaries of the Gun- 

 nison River, Brandegee ; also iu British Columbia. 



^^ -t- ^- Petals exceeding the sepals (sometimes ivanting in No. 6). 



6. S. crassifolia, Ehrhart. Stems diffuse or erect, flaccid: leaves rather 

 fleshy, varying from linear-lanceolate to oblong : flowers terminal or iu the 

 forks of the stem or of leafy branches: seeds rugose-roughened. — Colorado, 

 Montana, and eastward to the Ohio valley. 



7. S. Jamesii, Torr. Somewhat viscidly pubescent, rather stout: leaves 

 linear to ovate-lanceolate : pedicels divaricate : seeds smooth. — New Mexico, 

 Colorado, and westward. 



5. ARE W ARIA, L. Sandwort. 



Styles 3. Capsule globose or short-oblong. — Mostly low annuals or peren- 

 nials, usually tufted : with sessile leaves, often subulate and more or less rigid : 

 floAvers white, cymosely panicled or capitate. 



§ 1. The 3 vah-es of the capsule 2-clefl or parted: seeds not nppendnged at the 

 hilum : cespitose perennials, mostly scar iousbr acted. — Arexaria proper. 

 * Petals exceeding the sepals. 

 1. A. COngesta, Nutt. Smooth and glaiwous: leaves very narrowly subu- 

 late, scabrous on the margin, often pungent : flowers in 1 to 3 dense subumbellate 



