Ornithogalum 
A SRN Fee See fe 
INDEX 651 
76, 77, 80; Oakesiana, 78, 80; rubri- 
nervis, 366; cra 79, 80; stri- 
gosa, 773 ee ie 
Oetosis, 395, 396, 3 
ph as HG 
Onoc inquirenda, 297; sensibilis, 618; 
Be ra Philisekeec 61 
ca sensibilis L., Branched cells in 
the protha gees of, 617 
Onosm foal 
On the aationhle between ye number 
of ovules formed and the mber of 
seeds developing in Cercis, 243; 
Further rec ee = 
Opulaster pauciflorus 
 Opunitia, a Ae Thai 
. 3433 V vulgar lpntons 212, 
Ciceobeoraa 
’ 471 
464; Bakeri, ror, 
phe aye IOI, 464 
e alpine flora. Phyto- 
ae tan bled notes he the Rocky 
Mountain mig II, 
229 
nthus americana, 212, 214, 216 
aan cinnamomea, 561; delawarensis, 
29 
Ostrya virginiana, 214, 219 
Oxalis stricta, 358 
Oxyeoccus 472; macrocarpus, 426; Oxy- 
occos, 42 
Oxydendrm ete 28333, 35;--37, 
9, 559, 
Giepolis’ Aelia 560, 567; rigidior, 
356, 359, 363 
Oxyria digyna, 93, 465, 466, 467 
peng Flotowiana, 586, 615; hiber- 
Pinieuleria rare 30; elongata, 30, 
; ida, 
Panicum canta. cant be tote 561; 
nitidum, 357; nthes, 28, . 35; 
Scribnerianum, Sos ere SEay) S575 
stipitatum, 30, 35; virgatum, 354 
Papaver somniferum, 107 
Parnassia caroliniana, 29, 36 
ohmigene | acbharay 101, 464 
gis ocarpa, 98; platycarpa, 98, 
Parthentais integrifolium, 356, 357, 3 
Passiflora incarnata, 107; lutea, 29, 34, ps 
a 
Pedicularis canadensis, 356; flammea, 
10 
ride ei 470; racemosa, 470 
Pellaea Sec 308 
Pena 23 
Penicillium, Peg Hake 178; crustaceum, 
28 laucu 
a was us, 339; Hallii, 464, 
; Harbourii, som stenosepalum, 468 
lly te aoe evelopment in the 
enus, 137, 221 
Peperomia, AB 138, 140, 141, 14, 148, 
T50,"251, 152, 184,150, 221; 222,223, 
224, 225, 226 
234; arifolia, 08 143, 223, 224; blanda, 
138, 139,154, 225; Fraseri, 153; Fraseri 
Sone tp 138, 139, 153, 225; galioides, 
9, 155, 225; hispidula, 137, 142, 
223; humilis, 139; ionophylla, 140; 
Lanegsdoriiit,, 138,939) 5 255). 225: 
metallica, 138, 139, 152, 153; Ottoniana, 
50 
resedaeflora, 139 
150, I5I, 225; Sintenisii, 143, 223, 224; 
urocarpa, 140; verticillata, 138, 139, 
145, 147, 148, 149, I5¥, 152, 154, 225 
Peronospora, 160 
ersea Borbonia, 21 
2 ria communis, I59 
etalostemum purpureum, 355 
une s, 176 
etroselinum hortense, 84 
Petunia nyctaginifolia, 444 
Pmacelis alpina, 100, 464, 471; ciliosa, 
470; dubia, 29, 32, 35; heter ophyila, 
100, 342; Lyallii, 99, 465; sericea, 99, 
464, sf 
hallus 
Puiascols, Dek 548; multiflorus, 224; 
F 4 
Phleum 93; 469, 471; 
pratense, 360, res ne a 518, 519, 
3 
- 
hlox, 462; caespitosa, 100, 462, 463; 
condensata, 100, 462, 464; glaberrima, 
3 a0 baer 356, 3583 stolonifera, 20, 
4) 
ote ath flavescens, 560 
Dia mites communis, 359 
myces nitens, 286 
Paruecae pee 159 
oe a pr lager rulea, mpetri- 
mis, 98, 472, rai Giuaulifens 98, 
2, 473 
pyealla ee 354 
Physaria Geyeri, 342 
Physical and chemical factors influencing 
norganic salts to 
ae ia endiviaefolia, 612; oe 612; 
Fabroniana, 612; ana, 586 
ysostegia virginiana, 358 
