422 ROSACEiE. Geum. 



In fields and moist places, New York ! and New England States ! to Canada ! 

 Newfoundland ! Saskatchawan ! and alpine prairies of the Rocky Moun- 

 tains, Drummond ! July-Aug. — Stem stout, 2-3 feet high, simple, dichoto- 

 rnous at the summit. Pubescence of the leaves appressed. Flowers rather 

 large. — The name of Murray is oldest, but it was previously applied by 

 Jacquin to a different species. 



§ 2. Flowers erect, very small : segments of the calyx refiexed : bracteoles 

 wanting : head of carpels exserted on a slender stipe : styles articulated 

 and geniculate towards the sumtnit, glabrous, uncinate after the dissimilar 

 deflexed terminal portion falls away. — Stylipus, Raf. 



- -4. G. vernum : somewhat pubescent ; stems ascending, few-leaved, 

 slender; radical leaves either roundish-cordate and slightly 3-5-lobed, or 

 pinnate with the leaflets variously incised and lobed ; the cauline mostly 

 3-5-foliolate or lobed, serrate-toothed, ciliate, the uppermost leaflets lanceo- 

 late, incised ; stipules ovate, incisely toorhed ; petals (yellow) about the 

 length of the calyx-segments ; carpels scabrous, in a globose head ; recep- 

 tacle glabrous. — Stylipus vernus, Eaf. neogen. (1825) «. 3 ; Hook. ! ic. pi. 

 t. 286. 



Border of woods and thickets, Ohio I and Kentucky ! to Arkansas ! and 

 Texas! April-June. — Stems 6-20 inches high, weak, dichotomous and 

 few-flowered at the summit. Pedicels elongated m fruit. Calyx-segments 

 triangular-ovate. Stipe nearly the length of the head of carpels. Seed, 

 embryo, &c. as in Geum. — This interesting plant accords with the preced- 

 ing section in habit and character, except in the constant absence of the 

 bracteoles (which occasionally happens m that section), and in the stipitate 

 :head of carpels, in which it agrees with G. rivale. 



§ 3. Flowers large, nodding or erect : segments of the calyx erect or spread- 

 ing : head of carpels stipitate or sessile : styles articulated and geniculate 

 near the middle ; the upper joint mostly plumose and nearly persistent. — 

 Cartophyllata, Tourn., Seringe {excl. spec.) 



"/'*' 5. G. rivale (Linn.): stem erect, nearly simple, pubescent; radical 

 leaves lyrately and interruptedly pinnate ; the cauline (1-2) trifoliolate, or 

 •3-lobed ; flowers few, nodding ; petals broadly obovate, emarginate, very 

 abruptly narrowed into a claw, about the length of the calyx ; head of 

 carpels stipitate ; achenia very hairy ; lower joint of the persistent style 

 glabrous above; the upper one joint plumose. — Linn.! spec. 1. p. 501; 

 Michx.! fl. 1. p. 301 ; Engl. hot. t. 106 ; DC. ! prodr. 2. p. 551 : HooJc. ! 

 f,. Bor.-Am. 1. p. 175. 



Bogs and wet meadows. New York ! and Pennsylvania ! to Newfound- 

 land ! and prairies in the northern portion of the Rocky Mountains ! May- 

 June. — Stem 1-3 feet high, retrorsely pubescent. Flowers large. Cal'V'x 

 purplish. Bracteoles minute. Petals light purplish-orange, at length longer 

 than the calyx. The creeping rhizoma is astringent, and is employed as a 

 popular remedy. — Water- Avens. Purple Avens. 



6. G. geniculatum (Miclrx.) : stem erect, branchmg above, many-flowered ; 

 cauline leaves 3-parted; petals broadly cuneiform-obcordate, about the 

 length of the caly^c ; bracteoles reflexed in fruit ; achenia hairy ; the lower 

 joint of the persistent style hairy throughout, the upper one plumose- — 

 Michx. ! fl. 1. p. 300. 



