236 Rhodora 
10; divaricata, 10; elachista, 10; 
Hampeana, 10. 
Cephaloziellaceae, 10. 
Ceramium fastigiatum, 214; rub- 
rum, 214; strictum, 214. 
Ceramiums, 189. 
Cerastium viscosum, 188; vulgatum, | 
188, 224. 
Ceratodon purpurascens, 219. 
Chaenactis, 83; glabriuscula, 83. 
Chaetoceros coaretatum, 193, 216; 
decipiens, 193, 216; didymum, 
193, 216. 
Chaetochloa, 222. 
Chaetococcus varians, f. furcata, 
193, 216. . 
Chaetomorpha Linum, 191, 213; 
melagonium, 213. 
Chaetophora elegans, 164. 
Chaetosphaeridium globosum, 164. 
Chamaecyparis, 180. 
Chamaesiphon fuseum, 162. 
Champia parvula, 214. 
Characium ambiguum, 111. 
Cheilanthes Covillei, 53; Fendleri, 
53; fibrillosa, 49, 50; intertexta, 
54; lanosa, 52; myriophylla, 54; 
Parishii, 49, 50; Pringlei, 49; 
villosa, 49, 53; viscida, 49; 
Wootoni, 54. 
Chenopodiaceae, 224. 
Chenopodium album, 184, 186, 224. 
Chiloscyphus fragilis, 8; pallescens, 
8; polyanthus, 8; var. rivularis, 
8; rivularis, 8. 
Chlamydomonas, 211; nivalis, 164. 
Chlorella vulgaris, 211, 215. 
Chlorophyceae, 164, 190, 211, 213. 
Chondria, 189; Baileyana, 191; 
tenuissima, var. Baileyana, 214. 
Chondrus, 189; crispus, 214. 
Chroococcus macrococcus, 162; 
minutus, 162; turgidus, 162. 
Chorda, 189, 190; Filum, 191, 
213. 
Chordaria, 189; flagelliformis, 213. 
Choreocolax Polysiphoniae, 214. 
Chrysanthemum, 84; Balsamita, 
var. tanacetoides, 84; carinatum, 
84; Leucanthemum, 84, 186, 
228, var. pinnatifidum, 84; Par- 
thenium, 84. 
Cichorium, 84; Intybus, 84. 
Cineraria lyrata, 113, 115. 
Cirsium, 84, 218; altissimum, 84; 
arvense, 84, 186, 228; canum, 84; 
discolor, 84; horridulum, 84; 
lanceolatum, 84, 186, 228; muti- 
[DECEMBER 
cum, 84; var. subpinnatifidum, 
84; palustre, 84; pumilum, 84. 
Citrullus, 17; vulgaris, 17. 
Cladonia alcicornis, 148; alpicola, 
var. Karelica, 145, 146; caras- 
sensis, 146; digressa, 146; 
m. digressa, 146; f. irregularis, 
146; f. obliqua, 147; f. regularis, 
146; m. regularis, 146; f. subre- 
gularis, 146; m. spectabilis, 
147; cariosa, 148; var. corticata, 
145, 146; clavulifera, 145, 146; 
m. subvestita, 146; crispata, 
147; furcata, var. racemosa, 147; 
m. subclausa, 147; m. subulata, 
147; mitrulae, 145; pityrea, var. 
Zwackhii, m. hololepis, 148; f. 
subacuta, 148; squamosa, 147, 
148; f. botryoides, 148; strepsilis, 
148; var. corraloidea, 148; f. 
glabrata, 148; subcariosa, 145, 
147; m. squamulosa, 147; sub- 
squamosa, 147; sylvatica, 148; 
m. sorediata, 148; symphvearpa, 
s uncialis, 147; m. soraligera, 
1 
Cladonias, Some new, 145. 
Cladophora, 161, 189, 190; albida, 
213; var. refracta, 213; expansa, 
213; gracilis, 191. 
Closterium 204 205, 211; abrup- 
tum, 205; Archerianum, 205; 
costatum, 205; Cynthia, 205; 
Dianae, 205; didymotocum, 205; 
Ehrenbergii, 205, 211; gracile, 
var. elongatum, 205; incurvum, 
205; intermedium, 205; Jenneri, 
205; Kutzingii, 205; Leibleinii, 
205; Libellula, 205; lineatum, 205; 
Lunula, 205; moniliferum, 205; 
parvulum, 206; var. angustatum, 
206; pronum, 206; Pseudodianae, 
205; Ralfsii, var. hybridum, 206; 
rostratum, 206; setaceum, 206; 
toxon, 206; Ulna, 206; Venus, 
206. 
Cnicus, 84; benedictus, 84. 
Coburn, L. H., Gentiana linearis 
var. latifolia in Maine, 40. 
Coccineae (subsect. Satureja), 81. 
Cocconeis scutellum, 193, 216. 
Coelastrum proboscidium, 165. 
Coelosphaerium Kutzingianum, 
163; Naegelianum, 163. 
Coleanthus subtilis, 159. 
Coleochaete orbicularis, 165. 
Coleus, 133, 134, 135; Orobanche 
ramosa on a, 133; Blumei, 133. 
