CENT. VIII. 101 



bract, lane, acutis ped. eq. Germany &c, semi- 

 pedal, leaf uncial, petiol 2, flowers 6-8 rather 

 small, nearer to P. rotundif. of Radius than P. 

 petiolaris. 



710, Pyr. grandiftora Rad. Labrador, 

 leaves 3 small petiols longer, scape Suncial, 

 flowers 2-5 as large as in P. reticulata, scale 

 elliptic acute, bracts lane. ac. longer than pe- 

 dicels. It form-? with next a subg Toxilis by 

 style arched not flexuose, stamens not ascend- 

 ing, stigma olobed &c. 



711, Pyr. cespitosa Raf. rotundif. Torrey ! . . . 

 fol, plurimis cespitosis parvis petiolis subeq. 

 ovatis vel subrot. obt. marg. integris revolutis 

 scapo angul. nudo paucifloro, bract lane, acutis 

 eq. summit of Oquago, Taconic and Saranac 

 Mts. of New York, 3 to 6 inches high, leaves 6 

 to 12 very small hardly reticulate, fl. 5-8 medial 

 size. subg. Toxilis. 



712, Pyr. heterophyla Raf. rotundifolia Tor! 

 repens petiolis brevis et longis, fol. 3-7 mem- 

 branaceis ovatis et obovatis, obt. vel retusis, in- 

 tegris vel crenatis vix reticul. scapis 1-4 angula- 

 tis nudis, racemis 8-l()fl. bract, lanceol. acutis 

 pedic. brevior New York to Virg. near to P. 

 elliptica, but remarkable by the variable leaves 

 1 or 2 inches long, scapes 6 to 10 inches, flowers 

 medial, the linked scapes and short bracts dis- 

 tinguish it well through all its variations. 



713, Pyr. hybrida Raf. medial between P 

 heterophyla and P. reticulata fol. 1-6 ovat. 

 obov. et ellipt. obt. vel ret isis integris, cartila- 

 gineis supra nervoso reticul. petiolis brevis, sca- 

 po ang. squamis 2-3 lane. ac. bracteis similis 

 ped. eq. Mts. Allegh. it differs from P. reticu- 

 lata by smaller leaves and flowers, 2 var. uni- 



folia and pauciflora. 



