POLYANDRIA.— P0LYGYN1A. 215 



fals truncate at the apex, crenate ; style as long as 

 the petals, equal ; fruit ovate, subcordate. 



HAB. Woods. June. A large tree ; fl. cymose ; 

 yell.-wh.,ped. winged. 

 2. T. pubescens : leaves truncate at the base, oblique, 

 denticulate-serrate, pubescent beneath ; petals 

 emarginate ; styles longer than the petals ; fruit 

 globose, smooth. 



HAB. Banks of rivers. June. A large tree. 

 >. T. laxiflora : leaves cordate, gradually acuminate, 

 sparingly toothed, membranaceous, smooth ; pani 

 cle loose ; petals emarginate ; styles longer than 

 the petals ; fruit globose. 



HAB. Near the sea-coast. June. 



336. HELIANTHEMUM. CMnea. 



\. H. canadense: without stipules; erect, hairy, 

 leaves erect, linear-lanceolate, flat, paler j^eneath ; 

 raceme terminal, few-flowered ; segments of the 

 calyx broad-ovate ; capsule shorter than the calyx. 



HAB. Dry fields and woods. June. If.. A foot 

 high ; fl. yellow ; cal. hairy. 

 2. H. ramuliflorum : without stipules, erect, pulveru- 

 lent-tomentose ; leaves oblong, acute ; margin a 

 little revolute, whitish beneath ; racemes very 

 short ; segments of the calyx roundish, pulveru- 

 lent ; capsule globose, as long as the calyx. 



HAB. Sandy fields. lj. . July. Fl. yellow; style 

 very short ; cal. hairy. 

 I 11. corymbosum : suffrutescent, without stipule*, 

 erect, branched, pubescent ; leaves alternate, 

 lanceolate, hoary-tomentose beneath ; flower- 

 crowded, in iastigiate corymbs ; segments of the 

 calyx ovate, acute ; capsule scarcely as long as the 

 calyx. 



11AB. Sandy fields. June — Aug. Fl. very saw 1 ! 

 often apct. 



337. HUDSONIA. Usiinccc. 



1. II. ericoides : pubescent ; suberect ; branches elou 

 gated, leaves filiform, sub' newhat imbri- 



cate ; peduncles numeror: ! calyx cy- 



