388 FLORA. 



Petals entire or emarginate (rarely none). 



Capsule cylindric. 12. Holosteum. 



Capsule ovoid or oblong. 



Styles as many as the sepals. 



Styles oppfosite the sepals. 13. Moenchia. 



Styles alternate with the sepals. 14. Sagina, 



Styles fewer than the sepals. 



Seeds not appendaged by a strophiole. 15. Arenaria. 



Seeds strophiolate. 16. Moehringia. 



Plants fleshy, maritime; disk conspicuous, 8-io-lobed. 17. Ammodenia, 



Styles separate to the base; stipules present, scarious. 



Styles and capsule- valves 5. 18. Spergula. 



Styles and capsule-valves 3. 19. 7'issa. 



Styles united below; southwestern herbs with subulate leaves. 20. Loeflingia. 

 Fruit an indehiscent or irregularly bursting utricle or achene. 

 Leaves stipulate. 



Sepals awn-tipped. 21. Paronychia. 



Sepals awnless. 22. Anychia. 



Leaves not stipulate. 23. Scleranthus. 



I. AGROSTEMMA L. 



Annual pubescent herbs, with linear or linear-lanceolate acute or acuminate 

 sessile leaves, and large red or white erect flowers, solitary at the ends of long 

 axillary peduncles. Calyx oblong, not inflated, narrowed at the throat, lo-ribbed, 

 5-lobed, the lobes linear, elongated and foliaceous. Petals 5, shorter than the 

 calyx lobes, their blades obovate or cuneate, emarginate, not appendaged; stamens 

 10. Styles 5, opposite the petals. Capsule i-celled. Seeds numerous, black. 

 [Greek, a field-garland.] Two known species, natives of Europe and Asia. 



i. Agrostemma Githago L. CORN COCKLE. CORN ROSE. CORN CAMPION. 

 (I. F. f. 1438.) Erect, 3-10 dm. high, densely pubescent with whitish appressed 

 hairs. Leaves linear-lanceolate, acute or long-acuminate, erect, 5-10 cm. long, 

 4-6 mm. wide; flowers red, 2-8 cm. broad; calyx ovoid, its lobes 3 or 4 times 

 the length of the tube and much exceeding the petals, deciduous in fruit; petals 

 usually slightly emarginate, the blade obovate-cuneate. In grain fields and waste 

 places, frequent or occasional throughout our area. Adventive from Europe, 

 occurring also in northern Asia. July-Sept. 



a. VISCARIA Roehl. 



Perennial or biennial glabrous herbs, with erect stems and narrow leaves, the 

 basal densely tufted, those of the stem sessile, and small red or rarely white flowers 

 in clustered terminal cymes, the inflorescence in our species almost capitate. Calyx 

 oblong-campanulate, not inflated, 4-5-toothed, 8-10- ribbed. Petals 4 or 5, much 

 exceeding the calyx, each with a 2-cleft appendage at the base of the obovate emar- 

 ginate blade. Stamens 10, exserted. Styles alternate with the petals. Capsule 

 several-celled at the base, its teeth as many as the styles. [Latin, glutinous.] 

 About 5 species, the following of arctic and subarctic regions; the others European 

 and Asiatic. 



I. Viscaria alpina (L.) Roehl. RED ALPINE CAMPION. (I. F. f. 1439.) 

 Tufted, 0.7-3 dm. high, rather stout, somewhat glaucous. Basal leaves narrowly 

 oblanceolate or linear, 2-4 mm. wide; stem-leaves distant, linear-lanceolate, about 

 2 cm. long; inflorescence 1-2.5 cm - broad; bracts small, membranous; flowers 

 pink, 6-8 mm. wide; calyx campanulate, 4 mm. long, its teeth short, rounded; petals 

 obovate, 2-lobed; appendages minute. Quebec to Lab., Newf., Hudson Bay, 

 Greenland, and in arctic and alpine Europe and Asia. Summer. 



3. SILENE L. 



Herbs, with mainly pink red or white flowers. Calyx more or less inflated, 

 5-toothed or 5-cleft, lo-many-nerved, not bracted at the base. Petals 5, narrow, 

 clawed. Stamens 10. Styles 3 (rarely 4 or 5); ovary i-celled, or incompletely 

 2-4-celled. Pod dehiscent by 6 or rarely 3 apical teeth. Seeds mainly spiny or 

 tubercled. [Greek, saliva, in allusion to the viscid secretions of many species.] 

 About 250 species of wide geographic distribution. In addition to the following, 

 gome 35 others occur in the southern and western U. S. 



