26 



minimus, 

 Thunberg. 



flavescens. 



TRIANDRIA, MONOGYNIA. 



Brown bog-rush. 



This species, Mr. Elliot remarks, is obscure, n the neigh- 

 bourhood of this city, it is one of our commonest inhabitants of 

 bog-meadows, and the neighbourhood of ditches. From one 

 to two feet high. Glumes of a chesnut-brown colour. Pe- 

 rennial. July and August. 



28. Cyperus, Gen.pl. 93. ( Cyperoideae . ) 



Spikelets compressed, distinct. Calix scales 

 imbricated in two rows. Corolla 0. Stig- 

 mata mostly 3. Seed 1, naked. Willd. 

 (Stamina 2 and 3. Nutt.J 



1. C. culm capillary, spike solitary and in pairs ; in- 

 volucre one-leaved. Thunb. prod. 18. 



This interesting plant was first discovered as an inhabitant 

 of this country, about four years ago, in Monmouth county, 

 Jersey, by Zaccheus Collins, Esq. 



On the Pennsylvania and Jersey side of the Delaware, with- 

 in three or four miles of this city. Dr. Cleaver. . 



2. C. stem obtusely 3-angled ; umbels compound ; 

 spikelets crowded, lanceolate ; glumes acute. 

 Elliot. 



C. culm triquetrous leafy. Culm leaves linear, 

 acuminated, alternate, smooth, 2 or 3, umbel 

 3-leaved, simple, nearly 3 radiated. Involucrum 

 3 or 4 leaved, leaflets nearly alternate. Pedun- 

 cles entirely simple, unequal and without bracteas. 

 Spikelets alternate 3 to 4, compressed, obtuse, 

 17 -flowered, lanceolate, with a four-sided rachis. 

 CaL glumes 1-vaived, obtuse, brown in the centre. 

 Stam. 3, with persistent filaments. Pistil, bifid, 

 red. Seed ovate, beardless, black, rough. Muhl. 

 Descrip. Uber. Gram. p. 16. 



Tellow Cyperus, 



From 6 to 8 inches high. I have carefully compared the 

 above species, with specimens in my possession*, labelled in 



* From a portion of the Herbarium of the late Dr. Muhlen« 

 berg 1 , which I purchased from his son. 



