84 TRIANDRIA. MOXOGTNIA. 



or emarginate, inner marcfin closely inflected, including 

 the corolla, and the shorter membranaceous inner valve 

 (almost after the maimer of J\'ardus stricta). Corolla 2- 

 valved, ver\ thin and membranaceous. Masculine or neu- 

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

 plumose, and exserted. 



Collected by Dr. Baldwyn, on the sea-coast of Georg-ia. 

 ■». s. This species has very much tlie habit, and indeed 

 the character oi Andropojoii. 



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

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

 semic}lindric, tumid; ouLer valve of the heimaphrodite 

 flower transverse!}' rug"ose, 3-valved; accessory flow'ep 

 mostly neuter, upon an emarg-mated pedicell. 



Culm erect, tall, smooth, and solid, deeply grooved at 

 the commencement of the branches. Leaves rather short, 

 scabrous on themarg-in and midrib; sheathes compresstd, 

 shorter than the internodes, in the stem leaves nearly 

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

 g-ins. Spikes 2 to 3 inches long-, axillary, solitary, cyhndric, 

 approximating, turnishtd witli cymbit'orm sheathes, as in 

 tite genus .lndropo^o?i; perfect and imperfect flowers in- 

 clined to difterent sides of the spike, the latter pedicel- 

 liiie, mostly neuter; flowers and rachis euireiy smooth, 

 articulations deeply excavated, closed conjointly by the 

 com])iessi,'d neutral pedicells, and the valve of the perfect 

 flower. Outer valve of the hermaphrodite calix obliquely 

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

 transverse rugose elevations, inner valve acute, coriace- 

 ous, covered by the excavated arch of the rachs, and la- 

 terally impressed by the contiguous pedicell of the neu- 

 ter flower; corolla 3-valved, exterior auxiliary valve, or 

 neutral rudiment? nearly the length of the cahx, proper 

 corolla valves oval obtuse, considerably shorter than the 

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

 ly l-fourth the size of those of the perfect flower. Sta- 

 mens 3. Styles 2, very short. 



Collected by |)r. Baldwyn, on the sea-coast of Florida. 

 V. s. This species appears to be less allied to .indropo- 

 g-on by character than the former, but possesses at the 

 same time much of the habit of that genus, having axil- 

 lary pt-dicellate, solitary spikes, of which there are fre- 

 quently 2 in the same shrath of the leaf; each of the 

 spikes are also partly closed in a proper spathose acu- 

 minate leai with membranaceous margins. This species 

 appears to be very considerably allied to the B fascicn- 

 hita, of Desfontaints as figured and described in the 



