TRIANDRIA. MONOGTNIA. S5 



fabricated from other substances, but which all still retain 

 the name of paper, derived from Papyrus. 



Species. — § 1. culm terete.-~l. C. vnyiimus? This in- 

 teresting- and extremely small species, first found in Ja- 

 maica and Africa by Sloane and Thunberg-, has recently 

 been discovered by Dr. Isaac Cleaver, both in Penn- 

 sylvania and New-Jersy, not far from Philadelphia. — 

 2. articulahis. (found also m Jamaica, Egypt and India.) 

 — § 2. culm triquetrous. — j. fascicidattis . 4. poeeformis. S. 

 kyllingceoides. 6. nncinatus, of Pursh (a Mariscus?) 7. ati. 

 tumnalis. 8. compressus. 9. brizaeus. 10. vegetvs. 11. for" 

 ntosus. 12. virens. 22-JiUciihnis. 14:. maris coides. iS.Jilicinus. 

 IS.JJavescens. 17. gracilis. 18. ffi/dra. 19. repens. 20. tubero' 

 si/s. 21. temdjorus. 22. odoratns. 23. stngosus. 24. tetragO' 

 n2is. 25.favicomus. 26. disians. 27- speciosns. 28. Enslenii. 



The genus Cyperus appears to be widely dispersed 

 over the world, no countries, however, are so rich in this 

 genus as the United States, the West India islands, and 

 the continent of India; there are also 9 species in Barbary, 

 niQst of them common to Europe. The C favescens^ C. 

 virens and the C.fiescus, are the only species in the north 

 of Europe; of which, the first is also common to the Unit- 

 ed States. Northern Asia and Australia appear to afford 

 no species of this genns, thongh there are many species 

 at the Cape of Good Hope. Upon the whole, it appears 

 that the principal habitat of the Ct/perus is North America 

 and India within the tropics. A considerable number of 

 species are common to very distant regions. 



5S. DULICHIUM. Richard. 



Spikes somewhat racemose, axillary. Spike- 

 lets linear-lanceolate, rather compressed. Ca- 

 Heine scales subulate, almost distichally sheath- 

 ing. Style very long, bifid. Involucellate setae 

 long and scabrous. Seed acuminated by the 

 base of the style. 



Culm simple, round and leafy; leaves nearly equal, 

 closely approximating, almost spirally divaricate, but 

 generally spreading in 3 directions; the stipules (or och- 

 reae) cylindric, every where embracing the stem; spike- 

 lets disposed upon a sessile or pedunculate raceme aris- 

 ing from the sheathing stipules in the axills of the leaves; 

 spikelets and glumes linear and subulate, erect or patu- 

 lous, few-flowered, (6, or 10.) 



This genus, though very peculiar in habit, ha« by some 



