16 C. B. CLARkE: 
Spicae in umbella simplice dispositae. 
Glumae mucromllatae . . . . 7. P. nitens Nees. 
Glumae apice triangulares, vix acutae 
11. P. hewus C.B. Clarke. 
** Robustior. Spiculae 5 mm. latae.e Umbella 1—2 dm. lata 
12. P. angulatus Nees. 
__—>6. Pyereus flavescens Reich. annua, caespitosa, culmis 2—30 cm. 
longis; foliis cum ?/, parte culmi aequilongis, 1—3 mm. latis; umbellae 
radiis 1—6, usque ad 0—7 cm. longis; bracteis umbellam superantibus, 
foliiformibus; spieulis compressis, luteis aut fuscis, 5—20 mm. longis, 
2—3 mm. latis, 6—50-floris, lateribus subparallelis; glumis ovatis, ob- 
tusis, paullo inflatis; styli ramis 2, e gluma parum exsertis; nuce cum 
2/, parte glumae aequilonga, obovoidea, lucide nigra, tenuiter transver- 
sim undulato-lineolata; nucis cellulis extimis, praesertim in humeris, 
longitudinaliter oblongis. 
Pyereus flavescens Reich. Fl. excurs. (1830—32) p. 72; C.B. 
Clarke in Hook. f. Fl. Brit. Ind. VI (1893) p. 589. 
Oyperus flavescens Linn. Sp. Pl. ed. I p.46, ed. II p. 68, nee 
Linn. herb. propr.; Kunth Enum. II p. 5; Boeck. in Linnaeca XXXV 
(1867—68) p. 438, nee Schkuhr. 
Hab. in ins. caribaeis: Sieber Agrost. n. 105; Haiti prope Ma- 
riani in uliginosis: Picarda n. 1108. 
Distrib. in Europa, Asia oceidentali, Africa; in America rara, 
7. Pyereus nitens Nees, annua, caespitosa, culmis 2—30 cm. 
longis; foliis cum ?/, parte culmi aequilongis, 1—3 mm. latis; umbellae 
radiis 1—6, usque ad 0—10 cm. longis; bracteis 3—6 cum umbella 
subaequilongis, foliiformibus; spieulis breviter spicatis, stramineis aut 
brunescentibus, 5—18 mm. longis, 2 mm. latis, 8—44-floris; glumis 
ovatis, apice oblique patulis, saepissime mucronulatis; styli ramis 2, 
paullum exsertis; nuce parvula, cum 1/;—?/, parte glumae aequilonga, 
obovoidea, compressa, apice truncata, levi; nucis cellulis extimis sub- 
quadrangulis. 
Pyereus nitens Nees in Linnaea IX (1834) p. 283; C.B. Clarke 
in Hook. f. Fl. Brit. Ind. VI p. 591. 
Pyereus pulvinatus Nees in Linnaea IX (1834) p. 283. 
Oyperus pumilus Linn.! Amoen. Acad. IV (1758) p. 302 et Sp. 
Pl. ed. II p. 69; Kunth Enum. II p. 4 pro minore parte; nec Rotib. 
nec Nees. 
Oyperus nitens Retz. Obs. fasc. V (1789) p.13°; Kunth Enum. II 
P. 3; Boeck.! in Linnaca XXXV (1867—68) p. 483. 
Hab. in Martinique: Duss n. 477. 
Distrib. im Florida; in orbe vetere calidiore eöthihit, 
