294 North American Cyperacecb* 
Tribe III. SCIRPEtE. 
Flowers perfect* Scales of the spike imbricated on all 
sides (rarely bi-trifarious). Perigynium composed of several 
bristles, hairs, or linear scales, (sometimes cyathiform and mem- 
branaceous) or wanting. 
A. Scales of the sinlce hi-trifarious. 
7. ABILDGAARDIA, VahL 
Spikes with the scales bifariously imbricated, (by the torsion 
of the rachis trifarious, N. ab E.) Perigynium 0. Style 
3-cleft, the base bulbous and articulated to the triquetrous nut. 
— Culm angular, leafy at the base; spikes solitary, clustered^ 
or umbellate. 
Abildgaardia, Vahl, enum. 2. p. 296; R. Brow7i, py-odr. 1. p. 
229 ; Lestib. ess. fam. Cyp. p. 32, no. 26 ; N. ab Esenb. in 
Wight's contrib. p. 70, &fin Linnaa. 9. p. 289. 
Species of Cyperus, Linn., Kunth. 
Cyperus ^. Iria, Rich in Pers. syn. 1. p. 65. 
Abildgaardia cyperoides, N. ab E. ^ Meyen, 
" Culm triquetrous, sulcate on one side; leaves linear, ob" 
tuse, scabrous on the margin ; umbel somewhat decompound, 
the rays pubescent ; involucre and involucels shorter than the 
common and partial umbels; spikelets somewhat 2-flowered." 
A. cyperoides, N. ah E. SfMeyen in Acad. Nat. Cur. 16. suj)j). (fide 
JV. ab E. in Wight's contrib. p. 95.) 
Gussonea cyperoides, Presl. in ret. Hacnk. 3. p. 183, t. 33, (fide iVv 
ab E. 
Hab. Monte Rey in California, Hcenke^ 
Obs. This species has not come under my observation. 
It is said by Nees to be allied to his A. Eragrostis, Sf A^fmca, 
described in Wight's Contributions, 1. c. 
