CARYOPHYLLACE^. 49 



6. S. longipes Goldie.: weak, very smooth, glaucous; leaves linear, 

 subulate, spreading ; peduncles terroinal, dichotomously branched ; bracts 

 membranaceous ; pedicels much elongated ; petals broad-ovate, deeply bifid, 

 a little longer than the obtuse and obscurely 3-nerved calyx. 



Shores. Lake Ontario to Subarct. Amer. W. to Oregon. — Stem 2 — ^6 

 inches high, nearly simple or branched. "Mery variable. 



Sharp-leaved Stitchwort. 



8. ^ARENARIA. Linn.— Sandwort. 



(From the Latin arena, sand ; because the species generally grow in sandy 

 soils.) 



Calyx 5-sepalled. Petals 5, entire. Stamens 10, or fewer 

 by abortion. Styles 3, rarely 2 or 4. Capsule 1 -celled, 3- 

 valved, many-seeded. 



* Leaves linear, with scarious stipules at base. 



1. A. rtibra Linn.: stem prostrate, pilose: leaves filiform, somewhat 

 fleshy, acute or mucronate, shorter than the internodes ; sepals lanceolate, 

 somewhat obtuse, scarious on the margin ; peduncles axillary, at length 

 deflexed; seeds compressed, angular, roughish, not margined. A. Cana- 

 densis Pers. A. marina Big. Spergula ritbra Torr. d^- Gr. 



Sandy fields. Can. to Flor. W. to California. April— Nov. <^~Stem 

 3 — 10 inches long, at first erect, at length diffiise, smooth or pubescent. Leaves 

 variable in length and form. Flowers small, red, axillary and solitary, and in 

 terminal leafy cymes or racemes. A very variable species. 



Common Sandwort. 



** Leaves linear, lanceolate, or rounded, without stipules. 



2. A. squarrosa Mich. : densely cespitose ; stem simple, few-leaved ; lower 

 leaves, densely squarrose, imbricate, channelled, smooth ; flowers in dicho- 

 tomous panicles, erect ; sepals roundish-ovate, smooth; petals obovate, much 

 longer than the calyx ; capsule oval, 3-valved, exceeding the calyx. A. 

 Caroliniana Walt. 



Pine barrens. N. Y. to Geor. May — Aug. %-.—Stem 6—8 inches high, 

 forming dense tufte. Flowers white, in a small terminal panicle. 



Squarro9e Sandwort. 



3. A. stricta Mich. : stems numerous, erect, smooth, fihform ; leaves sub- 

 ulate-linear, erect, subfasciculate, spreading; panicle few-flowered; sepals 

 ovate, very acute, 3-ribbed, half as long as the petals ; capsule ovate. 



Rocks and barren ground. Can. to Car. May, June. %. — Stems 6 — 12 

 inches high. Zieat;es more linear than in the preceding, and not so much crowded 

 near the basei. Upright Sandwort. 



4. A, Grccnlandica Spreng. : densely cespitose, smooth ; stems low, de- 

 cumbent at base, 1— 5-flowered ; leaves narrow- linear, obtuse ; pedicels 

 filiform, nearly erect ; petals obovate wedge-form, entire or with a slight 

 notch, twice the length of the oblong, obtuse, membranaceously margined, 

 nerveless sepals. {Torr. tf* Gr.) 



Rocks. Greenland ; Labrador ; White Mountains, N. H. ; Whiteface and 

 Shawangunk Mountains, N. Y. June— Aug. %.— Stems numerous, 2 — 4 

 inches high, slender. Leaves erect or spreading. Flowers 3 or 4 lines in 

 diameter. A. glabra of Michaux is said to be confined to the more or less 

 mountainous portions of the southern states. Greenland Sandwort. 



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