INDEX TO VOLUME VI 
(New names and final members of new combinations are in heavy face type.) 
Albino plants, influence of sugars on the 
growth of, 401 
Alpha-crotonic acid, action of, on plants, 167 
Ambrosia trifida, certain pathologic con- 
ditions in, 34 
Andronescu, Demetrius Ion. Germin- 
ation and further development of the 
embryo of Zea Mays separated from the 
endosperm, 443 
Aspergillus niger, chemical stimulation of, 
330, 357 
Atkinson, George Francis, life of, 301; 
portrait of, Plate XXXV; publications 
of, 303 
Bailey, L. H. (See Farlow, W. G., p. 301) 
Beach, Walter Spurgeon. Biologic spe- 
cialization in the genus Septoria, i 
Brown, Ma.bel Mary. The development 
of the gametophyte and the distribution 
of sexual characters in Funaria hygro- 
metricj (L.) Schreb., 387 
Buchholz, John T. Studies concerning 
the evolutionary status of polycotyle- 
dony, 106 
Cacti, mucilage in, 156 
Cedrus Lihani, colyledons in, 113 
Carnegiea, mucilage in, 157 
Chayote edulis, 380, 383 
Chemical stimulation of the growth of 
Aspergillus niger, 330, 357 
Citrus grandis, venation and senescence of 
polyembryonic plants of, 311 
Citrus plants, polyembryony in, 311 
Colocasia esculenta, 380 
Colorado, role of sedges in plant communi- 
ties of, 120 
Corn, growth of albino plants of, 401; 
plastids and mitochondria in, 217 
Cranberry, endrot fungus on, 235 
Cyrtandra hiserrata, 53; confertiflora, 210; 
Conradtii, 53; Garnotiana, 205; Giffardii, 
205; glauca, 213; gracilis, 65, pi. VII, var. 
subumbellata, 66; Gray ana, 55, var. 
lanaiensis, 57, var. latifolia, 56, var. 
linearifolia, 56, var. nervosa, 57; hala- 
wensis, 60, pi. IV; Hashimotoi, 215; 
hawaiiensis, 211; kalichii, 63, var. tristis, 
64; Kauaiensis, 54; kohalae, 59, pi. Ill; 
laxiflora, 206, pi. XXIX, var. grandi- 
folia, 207, var. rhizantha, 207 ; Lessoniana, 
48; limosiflora, 209, pi. XXX; longifolia, 
211,7 parallela, 211; Lydgatei, 68 ; lysiosep- 
ala, 50, var. Fauriei, 50, var. Grayi, 52, 
var. haleakalensis, 52, var. latifolia, 51, 
var. pilosa, ^i;- Macraei, 67, pi. VIII, var. 
parvula, 67; macrantha, 212; Menziesii, 
62, pi. VI; mentis Lea, 213, pi. XXXII; 
oenobarba, 213; Oliveri, 58; paludosa 
brevicalyx f. linearis, 210; Pickeringii, 58, 
pi. XXXI; polyantha, 208, var. ambigua, 
209; procera, 54; ramosissima, 214; 
scabrella, 213; tri flora, 204; umbracculi- 
flora, 61, pi. V; waiolani, 65 
Cyrtandreae Hawaiienses, Sections Schizo- 
calyces Hillebr. and Chaetocalyces Hil- 
lebr.,47; Sect. Microcalyces Hillebr., 203 
Dasheen and chayote, 380 
Development of the embryo of Zea Mays 
separated from the endosperm, 443 
Development of the gametophyte and the 
distribution of sexual characters in 
Funaria hygrometrica (L.) Schreb., 387 
Ecologic foliar anatomy of some plants of 
a prairie province in central Iowa, 69 
Ecologic subterranean anatomy of some 
plants of a prairie province in central 
Iowa, 87 
Effect of the endrot fungus on cranberries, 
235 
Embryo of Zea Mays, development of, 
when separated from the endosperm, 443 
Endosperm of Zea Mays, separated from 
the embryo, 443 
Endothia pigments. II. Endothine red, 
242 
Endothine red, 242 
453 
