jENUS 4. 



c. Diphylleia cymosa Michx. Umbrella- 

 leaf. Fig. 1959. 



mosa Michx. Fl. Bor. Am. i : 203. 1803. 



ect, stout, i-2 high, glabrous or nearly so 

 asal leaves solitary, long-petioled, i-2 in 

 liameter, peltate near the center, deeply 2-cleft, 

 nany-lobed, the lobes acute or acuminate, sharply 

 lentate; cauline leaves 2, similar, smaller, peti- 

 )led, constricted in the middle and generally pel- 

 ate near the margin ; cyme many-flowered, 2'-$' 

 jroad; flowers white; petals flat, oblong, obtuse; 

 fruiting pedicels slender, i' long or more; berries 

 )lue, globose to oblong, 6" long. 



: 



woods, Virginia to Georgia and Tennessee, along 

 he mountains, mainly at higher altitudes. May-June. 



5. JEFFERSONIA B. S. Barton, Trans. Am. Phil. Soc. 3: 342. 1793. 



Glabrous perennial herbs, with basal palmately-veined or palmately-lobed leaves, and 

 solitary white flowers borne on slender scapes. Sepals 4, occasionally 3 or 5, petaloid, 

 caducous. Petals 8, flat, longer than the sepals. Stamens 8; filaments slender; anthers 

 dehiscent by valves. Pistil i ; ovary ovoid, many-ovuled ; stigmas 2-lobed. Capsule leathery, 

 pyriform, half-circumscissile near the summit. Seeds oblong, arillate. [In honor of Thomas 

 Jefferson.] 



A genus of 2 species, the typical one native of eastern North 

 America, the other of Manchuria. 



i. Jeffersonia diphylla (L.) Pers. Twin-leaf. Fig. 

 1960. 



Podophyllum diphyllum L. Sp. PI. 505. 1753. 



Jeffersonia binata B. S. Barton, Trans. Am. Phil. Soc. 3 : 342. 1793- 

 Jeffersonia Bartonis Michx. Fl. Bor. Am. i : 237. 1803. 

 Jeffersonia diphylla Pers. Syn. I : 418. 1805. 



Erect, 6'-8' high when in flower, attaining i6'-i8" in fruit. 

 Leaves glaucous beneath, long-petioled, cordate or reniform, 

 3'-6' long, 2 r -4' wide, parted longitudinally into 2 obliquely 

 ovate obtuse lobed or entire divisions; lobes rounded, the 

 sinuses sometimes 9" deep; scape naked, i -flowered; flowers 

 white, about i' broad; petals oblong, stigma peltate; capsule 

 about i' long, short-stipitate. 



In woods, eastern Pennsylvania, New York and Ontario to Wis- 

 consin Iowa, Virginia and Tennessee. Ascends to 2500 ft. m Vir- 

 ginia. May. Ground-squirrel pea. Helmet-pod. Rheumatism- 

 root. 



6. PODOPHYLLUM L. Sp. PI. 505. 1753. 



Erect perennial herbs, with horizontal poisonous rootstocks, large peltate palrnately 

 lobed leaves, and solitary white flowers. Sepals 6, petaloid, fugacious, the bud with 3 

 fugacious bractlets. Petals 6-9, flat, obovate, longer than the sepals. Stamens as many or 

 twice as many as the petals; anthers linear, longitudinally dehiscent. Pistil I (rarely sev- 

 eral); ovary ovoid, many-ovuled, forming a large fleshy berry in fruit Seeds numerous, 

 obovate, enclosed in fleshy arils. [Greek, Anapodophyllum, duck-foot-leaf.] 



A genus of about 4 species, the following typical one native of eastern North America and 

 Japan, the others Asiatic. 



