114 MAiifisr, 



—Annuals or perennials. Stem-leaves alternate. Flowers solitary or 

 somewhat corynibed, yellow, rarely white. 



A large genus, mostly from temperate and frigid regions. 



1. R. Hawaiensis Gray. {Enum* No. 1.) Hairy; stem erect, 3° 

 high.t branched ; leaves biternately compound, their primary divisions 

 on petioles l'-3' long, the secondary narrowed at the base into 

 short and usually margined petioles, or nearly sessile, cuneate or ob- 

 long, 2-3 -cleft; the lobes oblong or ovate-lanceolate, incised, and 

 toothed. Main petioles long, dilated and partly sheathing at the base. 

 Leaves of the upper part of the stem and branches simply ternate or 

 trisected, with the divisions laciniate-toothed or incised ; the floral undi- 

 vided and lanceolate. Pedimcles 1' - 2' long, somewhat fascicled or co- 

 rynibed. Petals i' long, longer than the hairy calyx, obovate, and with 

 a conspicuous 2 -cleft appendage on the short claw. Achenia 2" or 

 more long, including the stout subulate beak, in a head of k' in thick- 

 ness when fully grown. 



"Wooded regions of Hawaii. 



2. R. Maviensis G-ray. {Enum. No. 2.) Nearly glabrous; stem 

 slender, 3°-4° long, much branched, decumbent and spreading, or 

 not strictly erect. Leaves trisected, membranaceous, minutely hairy, 

 the lower on long petioles, their divisions ovate, short-petioled, 2'-3' 

 long, sharply serrate and more or less incised and 2-3-lobed or 

 trifld. Upper leaves less divided until the uppermost are small, lance- 

 olate, and nearly entire. Peduncles terminal, dichotomal, hairy, I'long 

 • or less, one-flowered. Flowers much as in No. 1, but smaller. Achenia 

 smaller, and more abruptly contracted at the apex, in a head k' io diam- 

 eter. A Var. has the leaves more divided, and is more hairy. 



Mountains of West Maui and Hawaii. The Var. on the mountains of Kauai. 



Order II. MENISPERMACE^. 



* Woody twiners, with alternate palmately veined leaves and no sti- 



pules ; small dioecious flowers, their petals all free and separate, 6 pe- 

 tals before as many sepals, and usually the same number of stamens 

 before these, also as many or half as many pistils. Ovule and seed sol- 

 itary. Embryo large with little albumen. Bitter tonic plants, or some- 

 times (as in Cocculus Indicus) narcotic ; chiefly of warm regions ; here 

 repre=ented by a single genus and species. 



*The "£«Mm." refers to the authors Enumeration of Hawaiian plants in the Proceed- 

 ings of the American Academy, Vol. 7, 186G. 



tThe degree sign (°) is here used to signify feet; that for minutes ('), inches; that for 

 seconds ("), lines or twelfths of inches. 



