358 REPORT OF NEW JERSEY STATE ^^lUSEUM. 



Dioscorea viilosa L. Wild Yam. 



Dioscorea viilosa Linnaeus, Sp. PI. 1033. 1753 [Virginia and Florida]. — 

 Knieskern 31. — Willis 63. — Britton 238. 



Thickets, usually in damp ground, throughout the State, ex- 

 cept in the Pine Barren and coast districts, frequent. 



Only one of Linnaeus' references is based upon an identifiable 

 plant, and as that is our species, I prefer to retain his name. 



Fl. — Mid-June to mid-July. Fr. — Early autumn. 



Middle District. — New Egypt, Birmingham, Hartford, Medford (S), 

 Chairville (S), Washington Park, Dividing Creek. 

 Pine Barrens. — Landisville (T), Twelfth St., Albion, Weekstown. 

 Coast Strip. — Manahawkin, Barnegat, Coxa's, Five-Mile Beach (T). 

 Cape May.— Goshen (S), Dias Creek (S), Cold Spring (S). 



Dioscorea viilosa glabrifolia (Bartlett). Smooth Wild Yam. 



Dioscorea paniculata glabrifolia Bartlett, Bull. 189, U. S. Dept. Agr., Bureai' 

 PI. Indust., 1910. IS [Cherokee Co., Kas.]. 



Less common than the preceding and collected only in the 



Middle district. 



Fl. and Fr. — Similar to that of the preceding. 



Middle District. — Farmingdale, Pt. Pleasant, Hartford, Yorktown. 



Family IRIDACE.E. Flags, etc. 



Stamens, three opposite the outer segments of the perianth, 

 style sometimes with large petal-like divisions. Comprises our 

 Flags and Blue-e_ved Grasses. 



Key to- the Species. 



a. Flowers blue. 



b. Style branches broad and petal-like, flowers large. 



c. Leaves 12-25 rnrn. wide. /. versicolor, p. 359 



cc. Leaves 3-5 mm. wide. /. prismatica, p. 359 



bb. Style branches filiform or obsolete, flowers small. 



c. Stem usually simple with a sessile terminal spathe. 



d. Capsules dark, 4-6 mm. high, pedicels about as long as the 

 inner bract, stems 1.5-3 rnir"- broad, spathes usually green. 



Sisyrhinchiiim angitstifolium, p. 360 

 dd. Capsules pale, 2-4 nun. high, pedicel longer than the inner 

 bract, stems 5-1.5 mm. broad, spathes usually purplish. 



S. inucronatum, p. 360 

 cc. Stem branched above, bearing two or more spathes. 



