INDEX TO 
SUBJECTS. 19 
Span v ili. 310 
#, Vill. 328; viticol 
, in Europe, vii. 30, er- 
mination of See ee ix: 30, in United 
ere Vii. 42, 300, on wild grapes, 
rs life history of, vi = “ge me 
curious conidiospores of, 
Inited 
cation o viii. ration of, 
viii. 305, 327, genera of, viii. 3 
Perularia bbc 27 ns, V. 63 
diseremort ne liosus, range in Ill., iv, 239; 
Petals, ls morphiagy of of, A 193, 214 
Pez ee ascospores, 
:epongios 
Phaeidium arsum, 
ar i a 
; duplicatus, v 
mpudicus, vi. 300 : 
bgatus, ¥. Bay, 258 
Buncmecerr number of species of, viii. 247 
Phaseot latifolius, i nm 118 
Yiceee ¢ “btatrata, v. 38; color vy. 34 
Phoradendron flavescens, ig zt egg a 
eo gree May” x. 94; hos 
11 of, ix. 10. y 
Phosphorescence c ‘plants, 
mic phy, 
‘conned of protoplasin 323 
142: on tubers, vii. 148 
diflora in 
Physianthns, en trap ng mo 
Physiology, of plants, V V3 rel (iskoees: 
vi. 182; Sachs’ ‘‘ Vo a oo eg viii. 321 
laid 0 tegia Virginiana , vil. 8 
pigdog pe eee of heat in flow- 
ers of, vi. 248 
Phytolacca deeandra, a prolific, v 
Phytophthora, viii. a po wie Re “vi. 309, 
sclerotia we ix, 3 
nia lee. iii. 3 
Pieris echioides, ig 94 
pees see 
€a pilosa, eystoliths | in, vii. 36; poms: 
cystoliths in, vii. 10, for histology, vi 
Pileolaria effusa, vii. 55 
Pilotrichum rae al in Fla., ii. 98 
Pine, opening of cones of, ii. 125; effects of 
moisture on w of, viii. 281; white, 
gin of in Mich., 38 
Pinns, vitality of seeds, A, 68 ; albi- 
hte 
; Torreyana, reservation of, ix. 30 
Piscidia erythrina, rhedicinal properties of, 
Planchon, Prof., x. 297 
of 
ition 8 to is ‘87. clanet- 
306, en 
vi. 217; eer nativ- 
vii. 1 
188; eo detecting 
"Mich., v. 90; pubes- 
dese te cordata, Nevercawerp ian. n, 
lanceolata, adept sh hg s' cat iL 
iW, win Ae yt alge forking 
— 35, of "ome sine ae ili. 
4 penis. ee ‘new vars “ 
gel, distinguished from’ wy iL 4, 
Plan tain, two wayside, iii. 41 
patap eat in Penn., Hi. 99 
nt food, a hee ‘tor eevee ix. 99 
oe 
Plasti ia, viii. 29 
Pla poamortgcha brachiate . blooming, v. 63 
Platanu sa, Vil. 
1 bias 
Plumule, lett rhage > v. 88; of ow 
rhiza, reine: of, ii. 182 
nea noteton eg 297; Bolan deri, vii. 32; 
pulchella, vii. 32; peas 
or, Wy. 
Poisonous plants, v. 11, 16, 17, 127, vi. 168, vii. 
26; Astragalus re s mollissimus, iii. Pal vii. 
76, ix. 180; Cicuta aculata = 
Fungi, viii. 300, 63; Crotolari * ¢ 
ro ix. 198 Grasses, iii. 8; min 
ji. 133 lvastrum, iv. 247, Ae 
Monotropa, uniflora, iii. 3%, 53, 79; Pas- 
tinaca x. 386 Rivulari, viii, 294; - 
thium whe 
Polarity cal A ntoedl engine ix. 147, x. 310 
ae um flavulum, vi, 217 
len, of Cléethra, v. 105; ge ae of, 
x. 330; germination of, x. 361, hom- 
ology of, X. 829: nuclei of, x. 329, 351; 
showers of, iv. 154; staining, x. ; 
tubes, x. 215, 229, development of, vii- 
138, penetration of stigmas, x. 
Pollination, v. 24, 64. og 94, , 256, 
vii. 2, 
Polyembryon¥, in en, vii. 71; in Tri- 
oliu 
Pol a Rugelii, iii. 4 
posta ee eon in Populus, iii. 51 
Ac nanan with salverform — ii. 64; 
ibium, ire tanning, i. 
cilinode, Feder Se at tip, 
adensis, yar. discoidea, ii. 64 
Fla. ies, iv. Ady 
Mai 
Poiyirichum brachs phylum, ny of, 
ope f, iii. 70 
rutescens, Vi. 236 
Porculace on pa ical ‘pecimens, y. 32, vii. 
re os committ es a 292: report of 
mittee 0 m, ix. 159, $64; resolutions 
ae are 
