

DECANDRIA PENTAGYNIA. 369 



S. media; stem procumbent, with an altei nate, pubescent, lateral line- 

 leaves ovate, smooth ; petals 2-parted ; stamens 5 10. 



HAB. Cultivated grounds, &c. (v). Stems weak ; leaves petiol. ; pe- 

 dun. \-jflowered. 



S. longifolia : very smooth ; stem erect, quadrangular, weak ; leaves 

 linear-lanceolate ; panicle terminal ; peduncle divaricate, very long, 

 bracteate ; petals broad-obovate, 2-parted, longer than the acute ?- 

 nerved calyx ; styles 3 4. 



HAB. Wet places. June, 1|_; stem 1 foot high, dichot., leaves l 

 2 inches long ; pan. loose. 



S. lanceolata : very smooth, procumbent or ascending ; leaves lanceo- 

 late, acute at each end ; petals about as long as the calyx ; stigmas 

 mostly 4, or wanting. 



HAB. Mountain bogs. June, 7|. ; stem diff., 68 inches long, 

 flowers axillary and terminal, sometimes apet. ; stam. 8 10. 



217. AREXARIA. Sandwort. 



* Leaves without stipules at the base. 



A peploides : stem dichotomous ; leaves ovate, acute, fleshy; calyx 



obtuse. 

 HAB. Sea-coast. July, 1J-; stem decumb. ; 8 12 inches long, 



thick ; Jlowcr subsolitary, axill. 

 A. lateriflora ; stem filiform, simple or branched, pubescent; leaves 



ovate, subtriply nerved ; peduncle lateral, solitary, elongated, bifid; 



one of the pedicels with two opposite bracts near the middle ; corolla 



longer than the calyx. 

 HAB. Bog meadows. June, Ij. ; stem 5 8 inches high ; leaves 



sessile, pale green, punct. 

 A. serpyllifolia : stem dichotomous, diffuse ; leaves ovate, acute, sub- 



ciliate ; calyx hairy ; exterior leaflets 5-ribbed. 

 HAB. Sandy fields. May July. ; stem 38 inches high ; 



leaves minute, approx. 



* Leaves with stipules at the base. 



A. rubra : stems prostrate ; leaves narrow-linear, acute, flat, some- 

 what fleshy, mucronate ; stipules sheathing, ovate, cleft. ; capsule as 

 long as the calyx ; seeds compressed, angular, roundish. 



HAB. Sandy fields. . Smooth, spreading calyx viscid-pubes. 

 Jlower red stamens 5 10. 



b. marina : leaves cylindrical, fleshy, unarmed. 



HAB. Salt marshes. May November, g -, stem smooth 

 Jlower dark rose-colored ; seed compressed. 



PENTAGYNIA. 



218. SPERGULA. Spurrey. 



S. arvensis : leaves verticillate : panicle dichotomous ; peduncles 01 

 the fruit reflexed. 



