GENUS i. 



BIRTHWORT FAMILY. 



643 



3. Asarum reflexum Bicknell. Short- 

 lobed Wild Ginger. Fig. 1573. 



Asarum reflexum Bicknell, Bull. Torr. Club 24: 533. 



pi. 317. 1897. 

 Asarum reflexum ambiguum Bicknell, Bull. Torr. Club 



24: 535- 1897. 



Similar to A. canadensc, more loosely pubes- 

 cent, rootstocks more elongated, slender. Leaves 

 reniform, broader than long, the basal sinus shal- 

 low or deep, obtusely pointed, the upper surface 

 commonly nearly glabrous, the petioles often 

 nearly glabrous in age; flowers smaller than 

 those of A. canadensc, the calyx-tube white 

 within ; lobes of the calyx-limb early reflexed, 

 purplish-brown, 4"-8" long, about as long as the 

 tube, triangular, with a straight obtuse tip, i"-4" 

 long. 



In rich woods, along streams or river valleys, often 

 forming large patches, Connecticut and southeastern 

 New York- to Iowa, Michigan, North Carolina, Mis- 

 souri and Kansas. April-May. 



2. HEXASTYLIS Raf. Neog. 3: 1825. 



Perennial evergreen acaulescent herbs, the foliage glabrous or nearly so. Rootstocks 

 dichotomously branched, the roots fleshy. Leaves leathery, often mottled, petioled. Flower 

 solitary, its peduncle subtended by a membranous bract. Calyx glabrous without, the tube 

 sometimes inflated, the 3 segments short, valvate. Corolla none. Stamens 12; filaments 

 shorter than the anthers, or wanting. Ovary mainly free from the calyx-tube ; styles dis- 

 tinct, prolonged beyond the extrorse stigmas into cleft appendages. Capsule free from the 

 calyx. Seeds flattened. [Greek, referring to the six styles.] 



About 6 species, natives of eastern North America. Type species: Asarum arifoliiim Michx. 



Leaves ovate or suborbicular. 



Calyx i '-2' long, much longer than thick. 

 Calyx less than i' long, little longer than thick. 



Fruiting calyx campanulate, its lobes about half as long as the tube. 

 Fruiting calyx urn-shaped, its lobes about one third as long as tube. 

 Leaves hastate. 



1. H. Shuttleworthii. 



2. H. virginica. 



3. H. Menuningeri. 



4. //. arifolia. 



i. Hexastylis Shuttleworthn (Britten 



and Baker) Small. Large-flowered 



Hexastylis. Fig. 1574. 



Hexastylis Shuftte'u'orthii Small ; Britton, Man. 



348. 1891. 

 Asarum grandiflorum Small, Mem. Torr. Club 4: 



150. 1893. Not Kl. 

 Asarum macranthum Small, Mem. Torr. Club 5: 



136. 1894. Not Hooker. 

 Asarum Shuttleivorthii Britten & Baker, Journ. 



Bot. 36: 98. 1898. 



Glabrous ; rootstocks branched. Leaves I 

 or 2 to each plant or branch, broadly ovate or 

 suborbicular, dark green and usually mottled 

 above, paler beneath, 2'-4' long, i*'-3' wide, 

 obtuse or subacute at the apex, the basal sinus 

 mostly narrow ; petioles 3'-8' long, ascending ; 

 calyx tubular-campanulate, 8"-2o" long, not 

 or scarcely contracted at the throat, the lobes 



obtuse, mottled with violet on the inner side, 



one-third to one-half as long as the tube; peduncle 8"-2o" long; filaments shorter than the 

 anthers ; anthers equally 4-ribbed, not pointed ; styles 6, each 2-cleft. 

 In rich mountain woods, Virginia and North Carolina. May-July. 



