52 DICOTYLEDONOUS PLANTS. 



* Leaves linear, with scarious stipules at base. 



1. A. rubra Linn. : stem prostrate, pilose ; leaves filiform, acute, 

 flat, somewhat fleshy, mucronate, shorter than the internodes ; sepals 

 lanceolate, somewhat obtuse, scarious on the margin ; peduncles axil- 

 lary, at length deflexed ; seeds compressed, angular, roughish, not 

 margined. 



HAB. Sandy fields. Mass. June. . Stem spreading. Flow- 

 ers small, red. Common Sand-icort. 



2. A. canadcnsif Pcrs. : somewhat hispid ; leaves filiform, longer 

 than the internodes ; sepals lanceolate, obtuse, with the margin broad 

 and scarious ; stamens 5 ; pedicels at length deflexed ; seeds some- 

 what cordate, compressed ; radicle somewhat prominent. A. rubra, 

 var. marina Linn. Torr. A. marina Smith. Big. 



HAB. Salt marshes. Along the whole coast of North America. 

 Stem 38 inches long, procumbent, succulent. Flowers axilla- 

 ry, solitary, on short peduncles, reddish. Capsule subglobose, 

 longer than the calyx. This plant has been confounded witli 

 A. marina of Smith ; but the latter is characterized by the seeds 

 having a broad membranaceous border, and is considered by 

 De Candolle identical with A. media of Linnaeus. De Candolle, 

 who appears to have seen specimens of the above plant, con- 

 siders it distinct from A. rubra, though this opinion is opposed 

 by the authorities above cited. It varies much in the numbef 

 of its stamens, being frequently di-tri and pentandrous. 



Sea Sand-woi1. 



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



3. A. squarrosa Mich. : cespitose : inferior leaves squarrose, imbricate, 

 channelled, smooth ; stem simple, few-leaved ; flowers in dichotomous 

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

 longer than the calyx ; capsules oval, 3-valved, exceeding the calyx ; 

 valves obtuse. A. caroliniana Wult. 



HAB. Pine barrens. N. J. to Car. May Aug. 21. Stem 6 8 

 inches high, much divided near the base. Flowers white, in a 

 small terminal panicle. Squarrose Sand-wort. 



4. A. stricta Mich. : stems numerous, erect, smooth, filiform ; leaves 

 subulate-linear, erect, subfasciculale, spreading ; panicle few-flowered; 

 sepals ovate-lanceolate, conspicuously striate, half as long as the petals. 



HAB. Mountains. Can. to Car. May, June. If. Stems 6 12 

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

 so much crowded near the base. 



5. A. glabra Mich. : very smooth ; stems numerous, erect, filiform ; 

 leaves subulate-linear, flat, spreading ; pedicels 1 -flowered, elongated, 

 divaricate ; sepals oval, obtuse, shorter tlian the petals. & uniflora 

 Halt. 



HAB. Mountains. N. H. N. Y. to Car. June. U- Stems 46 

 inches high, erect, slender. Flowers white, large. 



6. A. serpyUtfoUa Linn.: stem dichotomous, diffuse ; leaves ovate, 

 acute, sessile, somewhat rugose, smooth, ciliate ; sepals lanceolate > 



