CARYOPHYL-LACE^E. 49 



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

 subulate, spreading ; peduncles terminal, 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 8 

 inches high, nearly simple or branched. Very variable. 



Sharp-leaved Stitchwort. 



8. ARENARIA. Linn. Sandwort. 



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

 foils.) 



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. rubra Linn. : stem prostrate, pilose : leaves filiform, somewhat 

 fleshy, acute or mucronatc, 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 rubra Torr. fy Gr. 



Sandy fields. Can. to Flor. W. to California. April Nov. (J> Stem 

 3 10 inches long, at first erect, at length diffuse, 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. 1{.. Stem 6 8 inches high, 

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



Squarrose Sandwort. 



3. A. stricta Mich. : stems numerous, erect, smooth, filiform ; 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. 1J.. Stems 6 12 

 inches high. Leaves more linear than in the preceding, and not so much crowded 

 near the base. Upright Sandwort. 



4. A Gr&nlandica 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. <f* Gr.} 



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

 Shawangunk Mountains, N. Y. June Aug. 1\.. Stems numerous, 24 

 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. 



3 



