MONADELPHIA POLYANDRIA 



391 



forming wings. Petals greenish yellow, with a purple spotatbase> fugacious* 



Capsule roundish-ovoid, hispid. Seeds cuneate-obovoid, scabrous. 



Hab. Gardens ; and cultivated grounds : frequent. Fl. July. Fr. September. 



Obs. This foreigner is becoming naturalized about our gardens, and corn fields. 

 It appears to be the vtxr. ternatus, of Willd. DC. &c. Eight or nine species- 

 some of them very ornamental— are enumerated as indigenous in the U. States; 

 but none have been yet detected in Chester County. The H. syriacus is a verjr 

 common ornamental shrub in yards, and about houses. 



I>. Calyx naked at base* 



328. SID A. L. Jtult. Gen. 577. 

 [An ancient Greek name ; of uncertain etymology. 3 



Calyx 5-dcft, often angled, naked at base. Style many-parted. Car* 

 pels numerous, capsular, l-celled, 1 or few-seeded, arranged verticil* 

 lately, more or less united with each other. 



Herbaceous, or shrubby : leaves alternate, stipular ; flowers axillary, or term- 

 inal ; pedicels articulated. Nat. Ord. 24. Lindl. Malvacem. 



1. S. spinosa, //. Leaves ovate-lanceolate, serrate-dentate, with & 

 subspinosc tubercle at the base of the petiole ; 6tipules setaceous ; ped- 

 icels axillary, subsolitary, mostly shorter than the stipules and petiole ; 

 carpels 5, l>i-rostrate. Beck, Jiot. p. 58* 



SpIXOSE Si DA. 



Hoot annual. Stem 9 to 18 inches high* suflfruticosc below, roughish-pubescent, 

 With a few spreading brauches near the base. Leaves 1 to near 2 inches long, 

 and 1 third to 3 fourths of an inch wide, serrate-dentate, pubescent) especially Jon 

 the under surface, obtuse at base, the lower ones nearly ovate, or sub-cordate } 

 petioles half an inch to 3 quarters in length, with a short subspinosc tubercle at 

 base, and a filiform stipule on each side 1 third to half an inch long. Peduncles 

 about half an inch long, 1 or 2 in each axil, pubescent, articulated near the flower. 

 Calyx ribbed and angled, pubescent. Petals yellow, obnvate, scarcely longer 

 than the calyx. Carpels 5, each 1-seeded, with 2 erect hirsute beaks. Seeds tri- 

 quetrous-ovoid, smooth, dark purplish brown. 



Hub. Road sides, and waste places: frequent. Fl. July— August. /V* September. 



Obs. Apparently an introduced plant,— which is gradually extending itself 

 through the County. 



2, S. ABrTiLoy, L> Leaves orbicular^cordate, acuminate, cfenate- 

 dentatc, softly tomentose; peduncles shorter than the petiole; carpels 

 about 15, truncate, obliquely birostrate, hairy. Beck, Bot.p. 58. 

 Vvlgd-* Indian Mallow. Dew itt weed. Velvet leaf. 



Plant softly tomentose. Hoot annual. Stem 2 to 4 or 5 feet high, branched. 

 Leaves 4 to 6 or 8 inches long, and nearly as wide as long, cordate-orbicutar, with 

 an abrupt slender acumination ; petioles 3 to 5 inches long ; stipules subulate, ca- 

 ducous. Flowers axillary ,-usually a 1-flowered peduncle about an inch lone,- 

 and a second one (or slender branch) an inch and half long, bearing 1 or 2 small 

 leaves, and 2 or 3 pedicellate flowers which are apt to be abortive, Calyx subcam- 

 panulate, 5-parted, scarcely angled. Petals yellow, cuneateobovate, a little longer 

 than the calyx. Carpels 12 to 15 each, 3-seeded, verticillately arranged in a trun- 

 cate subcampanulate head about 3 fourths of an inch long, and the diameter equal 



34 



