minute, dark brown, tuberculate.—Habit of Cerastium nutans. The sinus of
the petals is so shallow that the plant might be ranked with Arenaria almost
as well as with Stellaria.
6. & macropetala: glabrous, branching from the base; stems erect, slender
; leaves linear and very narrow, somewhat fleshy, acute; cyme few-
flowered ; petals obovate-spatulate, 2-lobed, more than twice the length of
the ovate-lanceolate 3-ribbed sepals.
Arkansas, Nuttall! Dr. Pitcher ! Dr. Leavenworth! April.—© Stem
5-10 inches high. Leaves an inch or more long; the lower ones rather obtuse,
as long as the internodes. Flowers smaller than in S. Nuttallii, but
with the petals longer in proportion, much more attenuate below, and with
a deeper and narrower sinus. Sepals acute, rather rigid, not searious.
7 . S. uni flora (Walt.) : glabrous, branching from the base; stems erect,
very slender; leaves subulate-linear, acute; peduncles axillary, filiform, 1-
flowered; petals obcgrdate with a shallow sinus, twice the length of the oblong
acutish nearly nerveless sepals.-^ Walt. Car. p. 141. Arenaria glabra,.
Ell. sk. 1. p. 520, not of Michx.
Swamps, N. Carolina ( Croom!) to Georgia, May.—Stem 10 inches or
more high. Leaves an inch long, hardly a line wide, mucronate. Peduncles
solitary, not bracteolate, 2-3 inches in length. Sepals rather membranaceous,
with searious margins. Capsule ovoid, as long as the calyx.—Resembles
S. macropetala much more closely than Arenaria glabra, with which it
has been generally confounded. Habit wholly that of a Stellaria.
8. S. cerastoides (Linn.) : stems caespitose and decumbent, somewhat
dichotomous; leaves oblong, pubescent; peduncles in pairs, 1-flowered, de-
flexed in fruit; petals exceeding the obtuse sepals ; capsule oblong, almost
twice the length of the calyx. DC. prodr. 1. p. 398 ; Hook, plants oj Sabine’s
voy. in trans. Linn. soc. 14. p. 8.
Greenland, Sabine.
9. S. humifusa (Rottb.): glabrous ; stems procumbent, branched; leaves
ovate, sessile; fleshy; peduncles solitary, terminal, short, 1-flowered; petals
2-parted, rather longer than the acutish nerveless sepals. Hook.—“ Rottb.
in act. Hafn, 10. t. 4” ; Hook.! in Parry’s 2nd voy. app. p. 391, fl.
Bor.-Am. 1. p. 97; Bong. veg. Sitcha, l. e. p. 127. S. crassifolia, Cham.
Schlecht. 1. c. fide Hook. Arenaria thymifolia, Pursh?
Greenland, Arctic Sea! Sitcha.—© Stems 2-3 inches high. Peduncles
filiform. Sepals obscurely 3-nerved. Bongard.
10. 5!. gracilis (Richardson): glabrous; stem weak; sterile branches
gemmiferous; leaves lanceolate, somewhat succulent;, peduncle solitary,
axillary or terminal, elongated, 1-flowered; petals 2-parted, longer than the
glabrous acute nerveless sepals. Hook.—Richards, app. Frankl. journ.
p. 17; Hook. ft. 1. c.
Hudson’s Bay, &c., Richardson.—Capsule 6-valved.
§ 2. Styles 3 or 4: petals more or less perigynous, often minute or wanting.
(Spergulastrum, Michx.—Micropetalon, Pers.—Larbrsea, St. Hilt)
11. S. longipes (Goldie): shining or glaucescent; stems decumbent at
•the base, or procumbent with erect or ascending branches; leaves mostly
rigid linear or lanceolate (broadest at the base), acute ; peduncles (cymose
or nearly simple) with rather large ovate searious bracts; petals a little
longer than the ovate, obtuse or acutish, obscurely 3-nerved, scariously-mar-
gined sepals.
a. slender; leaves more or less flaccid, rather spreading; branches 6- 10-
flowered; peduncles and pedicels filiform; the terminal (middle) ones elongated;
sepals obtuse.—S. longipes, Goldie,in Ed.inb.phil. journ. 6. p. 185;
DC. prodr. 1. p. 400; Hook.! ft. Bor.-Am.. 1. p. 95.
/}. slender, rather rigid ; leaves more erect, and pungent, sometimes
almost subulate; sepals acute.—S. stricta, Richards, app. Frankl. journ.
ed. 2. p. 15; Hook. 1. c.—1. stems sparsely pubescent. Hook. 2. stems glabrous.
Hook.!—S. palustris, Richards. /. c. ed. 1. 3. leaves somewhat
glaucous. Hook. .
y. 3-4 inches high; stems 1- 2-flowered; sepals acute; otherwise like
«. & /?. ( ^ t . .
S. glaucous; branches erect from creeping stems, 3-6 inches high, 1-3-
flowered ; leaves erect, lanceolate, rigid, carinate; sepals rather obtuse.—
S. lseta, Richards. ! app. Frankl. journ. ed. 2. p. 16; Hook. ! app. P arry’s
voy., & in fl. Bor.-Am. 1. p. 96.
e. glabrous or somewhat pubescent; branches 1-2 inches high, 1-3-flow-
ered ; leaves ovate-lanceolate (the lowest sometimes ovate, obtuse), sometimes
sparsely ciliate at the base ; sepals acutish.—S. Edwardsii, R. B r.! in
app. Parry’s 1 st voy. p. 271; Richards. 1. c.; Torr. in ann. lyc. New-
York, 2. p. 170; Hook.! fl. Bor.-Am. 1. p. 96. t. 31; Cham. <f- Schlecht. in
Linncea, 1. p. 48. S. hitida, Hook, in app. Scoresb. Greenl. p. 411. S.
ovalifolia, Hook, fl.l.c .7
a. & 0. Woods and shores, Canada ! to Subarctic America! west to Oregon
( Nuttall!) Shore of L. Ontario and Michigan! y. Rocky Mountains,
lat. 403,, Dr. James i S. Arctic ! and Subarctic America, and Rocky Mountains.
t. Shores of the Arctic S e a ! Behring’s Straits, and Rocky Mountains,
lat. 403 (Dr. James!)—We have little hesitation in carrying out the
intimations of Sir Wm. Hooker, and considering these plants as modifications
of one species. Vars. a. & /?. may be distinguished from S. longifolia
by the shorter and less spreading leaves, always broadest at the base, and by
the somewhat larger flowers and obscurely nerved sepals.
12. <S. nilens (Nutt.! mss.): “ subcaespitose, smooth and shining ; stems
erect, sparsely hairy below, filiform, naked above; leaves lanceolate-subulate,
short, acute; petals 2-lobed and (as well as the capsule) much shorter than
the lanceolate very acute 3-nerved sepals.
“ Plains of the Oregon, in moist or shady places.— © Plant 3-5 inches
high, spreading. Leaves rigid, J of an inch long. Sepals shining, with
searious margins. Cyme few-flowered. Flowers expanding only in the
sunshine. Habit of an Arenaria,” Nutt.
13. S. longifolia (Muhl.) : stem branching, weak, glabrous ; leaves linear,
mostly attenuate at the base, acutish; cyme divaricate, naked, with lanceolate
searious bracts; petals cleft nearly to the base, at first shorter, at
length longer than the acute 3-nerved sepals.— T o r r .lfl. 1. p. 452 (excl.
syn. of S. longipes); DC.prodr. 1. p. 400; Hook. ! fl. Bor.-Am. 1. p. 94;
Bong. veg. Sitcha, l. c. p. 126. S. graminea, Bigel. fl. Bost. ed. 1. p. 110;
Cham, if Schlecht. in Linncem, 1. p. 49, fide Bongard Hook. Spergulastrum
gramineum, Michx.! ft. 1, p. 276, Mieropetalon gramineum, Pers.
Shady damp places, Virginia ! to Subarctic America ! Oregon ! to Sitcha !
June.—If Stem flaccid, 4-18 inches high; the angles usually retrorsely scabrous.
Leaves elongated, spreading to a right angle with the stem. Pedicels
filiform. Stamens 8-10. Capsule snbglobose, about the length of the
calyx.
14. S. borealis (Bigelow): glabrous, flaccid; leaves broadly lanceolate,
acute, veinless; petals (sometimes none) 2-parted, nearly the length of the
lanceolate acute nerveless sepals ; capsules ovate-oblong, nearly twice the
length of the calyx; styles 4.—S. borealis, Bigel.! fl. (Bost. ed. 2. p. 182;
Hook.! fl. Bor.-Am. 1. p. 94. S. lanceolata, T o r r.! fl. 1. p. 45; not of