HYPERICACEAE. 



Clvytonia. Stamens 5; pod 3-valvecL 



PortuLACA, Stamens? 20; pod globular, opening by u lid. 



TALINUM Adans. Ours perennial, with alternate linear leaves, and 

 eyraose flowers. Sepals ovate. Petals fugaceous. Styles 3-lobed. 



T. ter^tifolium Parsh. Plant 4-12 iuehes high, leafy below, scapose 

 it hove; leaves cylindrical; peduncles slender, bracted, branched; flowers 

 pink; sepals membranous, half the length of the petals; stamens 10-30; style 

 as long as the stamens. Sioux quartzite exposures; June-August; common; 

 Lyon and Woodbury counties. 



CLAYTON I A L. Low perennial spring plants, with simple stems from 

 tuberous roots, and entire leaves. Sepals ovate, persistent. Petals 5, hypo- 

 gynous Stamens 5, adhering to the short claws of the petals. Style 3-cleft. 

 Pod 3-valved. ^-.Vseeded. 



C. virginica L. Spring Bounty. Tuber globular, deep seated; stems 0-0 

 inches high, weak, with 2 opposite linear or linear-lanceolate leaves; flowers 

 white or roseate, in a terminal loose raceme. Rich woods; April-May; com- 

 mon. 



C. caroliniana Mx. Similar to the preceeding; basal .leaves ovate- lanceo- 

 late or oblong, cauline leaves petioled. Reported as an Iowa species by 

 Arthur. 



PORTULACA L. Puhslane. Annuals, with succulent stems and leaves, 

 and small "yellow mostly ephemeral flowers. Calyx 2-cleft, upper portion 

 deciduous, the tube cohering with the ovary. Petals 5, rarely more or less, 

 equal, fugaceous. Stamens 8-20, inserted on the calyx along with the petals. 

 Style 3-8-parted. Pod globular, 1-celled, many-seeded, opening transversely 

 near the middle by a lid. 



P. olerccea L. Common P. Stems prostrate, smooth, reddish; leaves 

 obovate or cuneate, apex rounded; flowers sessile, solitary, pale yellow; 

 sepals keeled; stamens 7-12; style about G-parted. Cultivated grounds and 

 waste places; June-September; common. 



P. retusa Englm. Similar to the preceeding but the leaves cuneate, the 

 apex refuse or emarginate Reported from Scott county. 



HYPERICACEAE Lindl. St. Johns-wort Family. 



Herbs or small shrubs, with opposite entire punctate or dotted exstipu- 

 late leaves, and regular and perfect solitary or cvmose flowers. Sepals 

 4 5, imbricated. Petals 4-5, mostly oblique or contorted, convoluted or 

 imbricated in the bud. Stamens few or many, usually in 3 or more 

 clusters. Ovary 1-7-celled; styles 1-7. Pod 1-7-celled, with septicidal 

 dehiscence. 



Hypericum. Petals yellow, convolute. 

 Ki.odks. petals purplish. Imbricate. 



HYPERICUM L. The principal genus of the order. 

 * Perennials; styles 5. 



H ascyron L. Great St. Johri's-wort. Stems '.!-() feet high; leaves ovate- 

 obloDg or ovate-lanceolate, sessile, clasping, acute or obtuse: flowers large, 

 in terminal cymes; styles numerous, in 5 sets; styles united below; pod 

 conical or ovoid. Rich woods, banks; July; infrequent; Winneshiek, 

 Allamakee. Clayton. layette, Scott, Muscatine. Henry, Johnson, Story, 

 Winnebago, and Cerro Gtordo counties. 



*• Perennials; stamens numerous] styles 3. 



Y\ prohficum E>. Shrubby St. ./. A small shrub. !-<"> feet high; leaves nar- 



