730 
ADDITIONS AND CORRECTIONS. 
3. Lem?ia polyrhiza. Many-rooted duck-meat . 
Roots numerous, clustered ; leaves reverse-ovate, orbicu- 
lar, sessile, above flat, beneath convex. 
Lenticula palustris major, Dillen. in Raii Syn. 129, 2. 
Lemna polyrhiza, Lin. S.P. 1377. 
On ditches; annual; July and August. 
Leaves large, fleshy, purple underneath. 
4. Lemna gibba. Bunched duck-meat . 
Roots solitary ; leaves reverse-ovate, above flat, beneath 
hemispherical, reticulated. 
Lemna gibba, Lin. S. F. 1377. 
Lemna minor /3, Hudson Fl.yJngl. 399. 
On ditches and stagnant waters ; annual ; June. 
P. 70. 2. Cyperus Haworthii, Haworth's cy perus. 
Culms 3-sided, in tufts, lying down ; umbels slightly 
compound; involucrum 2-leaved; spikes linear, crowded; 
bractece unequal, not half as long as the culm. 
Cyperus fuscus, Hooker Flor. Land. fig. too tall and upright. 
Culm about 3 inches high, in close tufts. 
In damp fields; annual; July and August. 
P. 83. After Gastridium. 94, add 
Spathellules 2, low T er with one awn at the 
base, apex 2-cut; upper toothed Agrostis. 89. 
P. 84. After Arundo. 71, add 
Lower spathellule bristled ; glume long; 
male flowers 3-stamened ; hermaph. 2-sta- 
men ed Hierochloa. 78.* 
And for Monilia. 76. read Enodium. 76. 
P. 108. 15. # Poa strida. Stiff meadow-grass. 
Panicle branched; locust ce 3-flowered, ovate; spathelles 
lanceolate, 3-ribbed, nearly equal, pointed, keeled ; spa- 
thellules 5-ribbed, truncated at the tip, villous at bottom. 
Poa stricta, Don in Wern. Tr. 
In pastures. 
16. Poa strigosa, in English Harsh meadow-grass. 
19. Poa leptostachya. Smoot hspiked meadow-grass. 
Panicle small, rather racemelike; pedicell very short, 
bald ; locustse 2-flowered ; spathelles lanceolate, pointed, 
equal, 3-ribbed, bent inwards; spathellules lanceolate, ra- 
ther pointed. 
Poa leptostachya, Don in Wern. Tr. 
On banks of rivers. 
P. 110. Change the name of the genus monilia to eno- 
dium, there being a genus of nematomyceas called by the 
former name, and add 
