Jones: Flora of Illinois, 58. Caryophyllaceae 123 



56. AizoACEAE A. Br. — Carpetweed Family 



1. Mollugo L. 



M. verticillata L. Carpetweed. Fields, roadsides, and waste places, com- 

 mon; nat. from the s. states. June-Oct. 



57. PoRTULACACEAE Reichenb. — Purslane Family 



1. Leaves several, clustered at the base of the stem, terete; petals rose; capsule papery, 



opening by 3 valves 1. Talinum 



I. Leaves not all clustered at the base of the stem. 



2. Leaves 2, linear-lanceolate; petals pink or white; capsule 3-6-seeded, opening by 



3 valves 2. Cla})tonia 



2. Leaves numerous, thick, spatulate; petals yellow (in our species); capsule circum- 

 scissile, many-seeded 3. Poriulaca 



I. Talinum Adans. 

 T. rugospermum Holz. Rock Pink. Sandy soil, rare; Henderson, La Salle, 

 Lee, Ogle, and Jo Daviess counties. June- Aug. 



2. Claytonia L. 



C. virginica L. Spring Beauty. Woods and waysides, abundant throughout 

 the state. Mar-. May. 



3. PORTULACA L. 



p. oleracea L. Purslane. Fields and waste ground, common; nat. from Eur. 

 July-Sept. 



58. Caryophyllaceae Reichenb. — Pink Family 



1. Sepals separate or nearly so; petals without claws or appendages. 

 2. Petals deeply 2-cleft or 2-parted. 



3. Capsules cylindrical, commonly curved, opening by a row of 10 (rarely 8) apical 

 teeth; styles 5 1. Ceraslium 



3. Capsules ovoid or ellipsoid, splitting into usually 6 (rarely 8 or 10) valves; styles 



3 (except in S. aquatica) 2. Stellaria 



2. Petals entire or emargmate, or absent. 



4. Styles as many as the sepals 3. Sagina 



4. Styles fewer than the sepals 4. Arenaria 



1. Sepals united into a tubular calyx; petals clawed. 



5. Calyx-teeth much longer than the calyx-tube; styles 5 5. Agroslemma 



5. Calyx-teeth much shorter than the calyx-tube. 



6. Styles 5 or 3 (0 in the staminate flowers of L\]chnis). 



7. Styles 3, rarely 4; flowers perfect; capsule opening by 6 teeth 6. Silene 



7. Styles 5 (or flowers unisexual) ; capsule opening by 10 teeth 7. L))chtus 



6. Styles 2; calyx terete or 5-angled 8. Saponaria 



I. Cerastium L. — Mouse-ear Chickweed 

 L Petals much longer than the sepals. 



2. Flowers L2-2 cm. broad; fruiting calyx 6-7 mm. long; capsule 12-14 mm. 

 long; seeds 1 mm. in diameter; plants perennial; in thin soil, chiefly in 

 limestone areas. May-June. [C. arvense sensu auth., non L.; C. arvense 

 var. oblongifolium (Torr.) Hollick &C Britt.] Field Mouse-ear Chick- 

 weed C. velutinum Raf. 



2. Flowers 5-8 mm. broad; fruiting calyx 4-5 mm. long; capsule 9-11 mm. 

 long; seeds 0.4-0.6 mm. in diameter; plants annual; moist ground, com- 

 mon. Apr. -May. Nodding Mouse-ear Chickweed C. nutans Raf. 



