tulous. Hook. 1. c.—R. multifidus, Pursh ! fl. 2. p. 736; DC. 1. c. R. aqua-
ticuSj tlore tlavo, ioliis infimis tenuissiirte divisis &c. Clavt f Vivo' pH 9
no. 885. R. fluviatilis, Bigel. ft. Bost. ed. 1 ® 139 R ’ delnhitiVni;™«'
T o r r in . E a t bot. ed. 3. (1822) p. 424. R. lacustris,' Beck 6f \ ' r L j in
E a t. 1. c. p. 423, m trans. Albany inst. 1. p. 148. t. 5.
fi°ating ones reniform> Palmately
y. creeping; lower leaves many-cleft, with linear segments; the upper
ones reniform, palmately many-cleft. Hook. 1. c. t. 7 B f 2 -_R Pm-shii
“• Richards. ! in app. Frankl. journ. ed. 2. p. 23. ' J
Y. creeping; leaves all ,round-reniform, palmately 3-5-cleft. Hook. 1. c. t.
7. B. f . 3.—R. Fnrshn ft, Richards. 1. c. R. Gmeleni. DC. prodr. 1. p. 35.
(excl. syn.) R. Langsdorfii, DC. L c. r f
In ponds and muddy places, from extreme Arctic America to N. Carolina!
w n M n ™WeSt i°- [he £ ocky Mountains!bound. May—July.—Flowers bright yellow. and Kotzebue’s
, 19- R l™losus-(Nutt.! mss.): “ subaquatic, procumbent, somewhat hairy 5
• pab:nately 5'cleft, the segments 2-3-toothed or somewhat
lobed, the divisions blunt, short and shallow; stem 1- 2-flowered; sepals
strai^htbeak^ 6 r0Unded p eta s’ carPels scarcely keeled, with a short nearly
ptS dV n lh.e eas*e™ ranges of theRocky Mountains, Lewis’s
ver’ * c;, ^ ear Purshn r. Hook. ? Nutt.—It appears scarcely to differ, -
except m the pubescence, from some of the numerous varieties of R.Purshii.
tl- R ' Lappomciis (Linn.): leases glabrous; radical ones on long pe-
1 fl ’ 3 if r/ d’ W-lth , , lobe® dilated, obtuse, coarsely toothed; Scape
low e r e d , (sometimes 1-leaved,) longer than the leaves; sepals 3, reflexed.
DC. . Lin n .jl. Lapp. t. 3.f. 4; DC. prodr. 1. p. 35; Hook. fl. Bor.-Am. 1
p . JLO. ■
i “ ? America from lat. 50° to the Arctic Sea. Kotzebue’s Sound,
pSelts f6-n10, m roWundrisfh\ hfetad^s. A^llied ttaol sF i6c afrlia .S Hcholoekcehrt.. ); Spatula1‘te. Car,
f L R - hyperboreus (Rotthcell): leaves glabrous, petioled, 3-cleft; lobes
oblong-oval, divaricate, the lateral ones somewhat 2-cleft, the middle one
undivided i sheaths with the base biauriculate; stem' filiform, creeping.
SGmae7le“n i•, Sccwh l,e chLt.3 a31n v*. mDaCd1.- Vboto. d2r. -p1.- P85- . 3(5fi)d He oHooko.fki..) Bor.-Am. 1. 1p. 16( R.
A“ er5ca-—Neads globose, compact; carpels distinctly margined on
leaves.Ck'/>C°0^er'~^A ^ed t0 R' Cymbalana> but distinguished by its trifid
22. R.pygm<eus (Wahl.): leaves glabrous, 3-5-cleft, radical ones petioled
cauline ones sessile; stem 1-flowered; calyx glabrous, longer .than the’
S rs ; carpels roundish, pointed with a short hooked
style. D C— Wahl. ft. Lapp. p. 157. t. 8. f. 1 ; Pursh ft 2 v 393 • DC
prodr. l.p . 35; Hook.! fl. Bor-Am. l.p . 17. ’ « 9 ’
o-pn ?aTT0f| Arm1C ,A“ erica! and Rocky Mountains in lat. 55°. Spitzber-
T flPrafW p ChkA ’ s Sound, Hook. $ Am. in bot. Bee’chey.
Labrador, Pursh, and herb. Schwemitz /—Stem erect, never creeping
l mcW ' H ^ d s oblong. Carpels subglobose, hot margined at the
back. Hooker. ^ Intermediate between R. hyperboreus and nivalis. DC.
1 * Babinii (R. Brown) : radical leaves on long petioles, 3-parted ■
lob s elliptical, the lateral ones 2-cleft; cauline ones sessile, 3-parted the’
divisions linear; calyx hirsute, nearly equal to the retuse petals. R B r in
P a rry ’s 1st voy. app. p. 264; Hook.fi. Bor.-Am. 1. p. 17
Melville Island and Shores of the Arctic Sea.—Very near R. nivalis. R. Br.
24. R, nivalis (R. Brown): radical leaves on long petioles, dilated, lobed;
the lobes somewhat ovate ; cauline ones nearly sessile, palmate ; stem erect,
about 1-flowered ; calyx very hirsute, shorter than the obovate entire petals ;
style nearly straight, as long as the glabrous ovaries. R. Br. 1. c.; Hook..
I. c.
a radical leaves reniform, deeply lobed ; the middle lobe cuneiform-obo-
_______ j Lpoo /? ten__R Tliunlis TAnn. : DC. vrodr. 1. V.
35.ft. radical leaves cuneiform at the base, lobed scarcely to the middle ; the
middle lobe semi-ovate, broad at the base; petals round-obovate, once and a
half the length of the very hirsute calyx. R. Br.—R. sulphureus, Boland.;
Schlecht. animad. bot. 2. p. 15.
y. radical leaves somewhat cuneiform at the base, or deeply lobed transversely
; the middle lobe cuneiform-obovate, narrower at the base. R. Br.
Arctic America ! and from Labrador! and Spitzbergen! to Kotzebue s
Sound (Beechey), and the Rocky Mountains, lat. 55°.
25. R. Eschscholtzii (Schlecht.): leaves ciliate; radical ones petioled,
3-parted, the divisions lobed ; stem about 1-flowered ; calyx hirsute, shorter
than the petals ; carpels obliquely ovate, terminated by a short style. 74 C.—
Schlecht. animad. bot. 2. p. 16. t. 1; DC. prodr. 1. p. 35; Hook. fl. Bor.-
Am: 1. p. 18. > . ' ' \
ft. petals abortive or very small. Hook. 1. c.
Unalaschka, &c. N. W. America, ft. Rocky Mountains, lat. 52^-56°,—
Near R. nivalis.
26. R. pedatifidus (Smith) : leaves minutely pubescent; the radical ones
petioled, palmately or pedately divided, with the lobes linear and entire;
scape erect, nearly naked, 1—2-fl.owered; calyx spreading, somewhat vinous.
Hook—Smith, iri Rees's cycl.; DC.prodr. 1.p. 36; Hook. l. c. t. 8 .B .
Rocky Mountains, lat. 52°—55°.—Leaves somewhat ciliate. Scape
1-leaved, 3 inches high. Carpels disposed in a roundish head, ovate, attenuate
into a recurved style which is scarcely as long as the fruit. Hook.
27. R. acris (Linn.) : leaves pubescent or somewhat glabrous, 3-5-part-
ed with the segments deeply and laciniately trifid ; lobes lanceolate, acute,
the uppermost linear ; stem rnany-flowered ; peduncles terete; calyx spreading
villous ; carpels roundish, compressed, terminated with a short recurved
style.—Pursh, ft. 2. p. 394; DC. prodr. 1. p. 36; Hook. fl. Bor.-Am. 1.
p. 18. \ .. 11 ft. hairy ; petals oblong, 10-14.—R. Deppii, Nutt. ! mss.
Meadows and pastures, Hudson’s Bay to Pennsylvania, ft. California,
Nu tta ll! June.—Stem 1-2 feet high, hirsute, with the pubescence appressed
or spreading ; sometimes nearly glabrous. Flowers large. Butter-cups.
28. R. repens (Linn.) : stems, sending off from the base long prostrate or
creeping branches; leaves trifoliolate; leaflets cuneiform, 3-lobed incisely
toothed, the middle one (and generally the lateral one also) petiolulate ; peduncles
sidcate;.calyx spreading; carpels with a broad rather straight point.
—DC. prodr. 1. p. 38; Pursh, fl. 2. p. 394; DarUngi.fi. Cest. ed. 2. p. 329.
R. prostratus, Poir. diet. 6. p. 113. R. intermedius, E a t ! man. ed. 3. R.
Clintonii, Beck,fl. p. 7. R. fascicularis, Bart. fl. Philad. 2. p. 25. R. niti-
dus, Muhl. cat. ed. 2. p. 56; Ell.<sk. 2.p. 60; Hook. fl. Bor.-Am. 1. p. 20.
^ ft. linearilobus (D C .): prostrate;.stems very long, floriferous ; lobes of the
leaves very narrow. .
y. Marilandicus: stem and petioles densely hirsute with rather soft hairs;
leaflets distinctly petiolulate.—R. Marilandicus, Poir. diet. 6. p. 126; DC.
syst. 1. p. 291; P u rsh ! 1. c.
Wet shady places, particularly along rivers, Canada! to Georgia! ana