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. canadcnse, 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 arifolium 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. Memmingeri. 



4. H. arifolia. 



i. Hexastylis Shuttleworthii (Britten 



and Baker) Small. Large-flowered 



Hexastylis. Fig. 1574. 



Hexastylis Shtittleu'orthii Small; Britton, Man. 



348. 1891. 

 Asarum grandiflorum Small, Mem. Torr. Club 4: 



150. 1893. Not Kl. 

 Asarum macranlhum Small, Mem. Torr. Club 5: 



136. 1804. Not Hooker. 

 Asarum Shuttleworthii Britten & Baker, Journ. 



Bot. 36: 98. 1898. 



Glabrous ; rootstocks branched. Leaves r 

 or 2 to each plant or branch, broadly ovate or 

 suborbicular, dark green and usually mottled" 

 above, paler beneath, 2 r ~4' long, i*'-/ 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. 



