40 TRIANDRIA. MONOGYNIA. xyris. 



29. XYRIS. L, 



Flowers in a roundish or oblong head. Cahjx glu- 

 maceous, cartilaginous, 3-valved. Corolla 3-petalled, 

 ^qual. Stigma 3-cleft. Capsule 1-celled, 3-valved. 

 Gen. pi. 89. Nu 1 1. Gen. 1. p. 30. Ju s s. p. 44. 

 Roem. ^ Schult. Gen. 167. Lain. III. t.XXXVL 

 Nat. Ord. Junci Juss. Yellow-eyed grass. 



1. X. caroliniana Walt,: leaves linear, grass-like; 

 scape 2-edged ; head ovate, rather acute ; scales round. 

 Walt. Car. p. 69. Vahl Enum. II. p. 206. Pursh Ft, 

 I. p. 33. Roem. ^ S chut t.\.Tp. 55\, X. jupacai M i c h, 

 FL I. p. 23. B ig, Bost. p. ] 3. X. fiexuosa Elliott Sk. 

 1. p. 61. X. foliis gladiatis Groiu Virg. p. 11. 



Root somewhat bulbous, cespitose. Scape about a foot higbj 

 straight, or a little twisted, erect, very smooth. Leaves much 

 shorter than the scape, a line or a line and a half wide, flat, or 

 occasionally spirally twisted. Head round-ovate. Outer valve 

 of the calyx (bract £11.) nearly orbicular, rigid, concave, 

 covering the lower part of the corolla, green in the centre, the 

 margin yellowish ; (inferior scales empty ;) inner valves shorter, 

 linear-lanceolate, ciliate on the upper part. Petals yellow, as 

 long as the calyx ; border flat, retuse ; claws narrow. Fila- 

 ments pubescent ; anthers oblong. Style as long as the sta- 

 mens; stig7nas obtuse. Cafisule oblong, membranaceous, ob~ 

 tusely triangular, opening at the angles. Seeds very numerous, 

 minute, oblong, acute at each end. 



Hab. In wet meadows and sandy swamps ; not uncommono 

 July — August. 



2. X. brevifolia M i c h. : leaves subuiate-ensiform, short; 

 head nearly globose ; interior valves of the calyx shorter than 

 the exterior valve, slightly notched. Mich. Fl.l. p. 23. 

 Elliott Sk. \. \). 52. Pursh Fl.l. ^. 23. Roem.ir 

 Schult. I. p. 552. 



Root perennial. Stem 12 — 18 inches high, compressed near the 

 summit. Leaves 3 — 6 inches long, linear-subulate, much 

 twisted. Elliott. 



Hab. In Pennsylvania. Mu hlenberg. 



30. SCHOLLERA. Schrcb, 



Spath 1 -flowered. Anthers of 2 forms. Corolla, 

 tube very long ; limb deeply 6-parted. Capsule 1-celled. 

 Gen. pi. 1711. JVilld. n. act. Soc. scriit. H. Nat. 

 III. p. 438. (fide i^. £s? ^.) Muhl. Cat. -p. 5. Lep- 

 TANTHus Mick. Nat. Ord. Narcissi Juss, 



