84 TRIANDHIA. MONOGTXIA. 



or emarginate, inner marg-in closely inflected, including 

 tl.e corolla, and the shorter menibranaceous inner valve 

 (almost after the manner of J\ard'us stricta). Corolla 2- 

 valved, very thin and membranaceous. Masculine or neu- 

 tral flower and calix smaller. Stamens 3- Styles 2, brown, 

 plumose, and exserted. 



Collected by Dr. Haldwyn, on the sea-coast of Georgia. 

 T). s. Tills species has very much the habit, and indeed 

 the character o^ Andropojnn. 



3. *rugosn. Culm erect, leafy; spikes cylindric, solitary, 

 axillary, and proximate; joints of the rachis smooth, sub- 

 sem.cClindric, tumid; outer valve of the hcimaphrodite 

 flower transversely rugose, 3-valvefl; accessory flower 

 inosvly neuter, upcn an ( margma'ed pedicell. 



Culm erect, tall, j-mootli, and solid, deeply grooved at 

 the commencement of t!ie branches. Leav< s rather shorf, 

 scabrous on the margin and midrib; sheathes compressed, 

 shorter than the internodes, in the stem leaves nearly 

 open, and cloven to the base, with membranaceous mar- 

 gins. Spikes 2 to 3 incites long, axillary, solitary, cyhndric, 

 approximating, furnish'-d with cymhiform sheathes, as in 

 tlie genus .hidropogon; perfect and imperfect flowers in- 

 chned to d.fierei't sides of the spike, the latter pedicel- 

 liiie, mosih neuter; flowers and rachis entirely smooth, 

 articulations deeply excavated, closed conjointly by the 

 compressed neutral pedicells, and the valve of the perfect 

 flower. Outer valve of the hermaphrodite calix obliquely 

 ovate, acute, cartilaginous, externaliy marked with 2 or 3 

 transverse rugose ele'-ations, inner valve acute, coriace- 

 ous, covfcied by the excavated arch of the lach s, and la- 

 tt rally impressed by the contiguous pedlcell of the neu- 

 ter flower; corolla o-valved, exterior auxiliary valve, or 

 neutral rudiment? nearly the length of the cal.x, proper 

 corolla valves oval obtuse, considerably shorter than the 

 calix; valves of the neutral calix smooth and even, scarce- 

 ly 1-fourth the size of those of tlie perfect flower. Sta- 

 mens 3. Styles 2, very sliort. 



Collect* d by Dr. Baldwyn, on the sea-coasst of Florida. 

 T'. s. 'I'his species appears to be less allied to Andro})o- 

 gon by character than the fomn^^r, but possesses at ihe 

 same time much of the h.-bit of that genus, having axil- 

 larv pedicellate, solitary spikes, of which there are fie- 

 quently 2 in the sanie slxalh of the leaf; each of the 

 spikes are also partlv closed m a proper spathose acu- 

 minaie leai with membranaceous margiiis. This species 

 appeals to be very considerably allied to the R fascicu- 

 lutuy of Desfoniaines as figured and described in the 





