Index to Vols. XXI-XXX. 
19 
Lang, W. H. : On the Sporogonium of 
Notothylas (*), 21, 201. 
— Studies in the Morphology and Anatomy 
of the Ophioglossaceae. I. On the Branch- 
ing of Botrychium Lunaria, with Notes on 
the Anatomy of Young and Old Rhizomes 
(*), 27, 203. 
— Id. II. On the Embryo of Helmintho- 
stachys (*), 28, 19. 
— Id. III. On the Anatomy and Branching 
of the Rhizome of Helminthostachys 
zeylanica (*), 29, 1. 
Larix, effect of defoliation on growth and 
structure of wood of (*), 27, 621. 
— europaea, bisporangiate strobilus (*), 27, 
575 ; seedling-structure (*), 23, 210. 
— leptolepis, seedling-anatomy, 23, 210; 
structure of ovule (*), 30, 193. 
— occidentalis, seedling-structure, 23, 210. 
Lastrea pseudo-mas, apogamy and apospory 
in varieties of (*), 21, 175, 180. 
Laurus, spp ., seedling-anatomy (*), 28, 712. 
Lawson, A. A. : The Gametophytes and 
Embryo of Pseudotsuga Douglasii (*), 23, 
163. 
— The Gametophytes, Fertilization, and 
Embryo of Cephalotaxus drupacea (*), 
21, 1. 
• — The Gametophytes and Embryo of Scia- 
dopitys verticillata (*), 24, 403. 
— The Gametophytes and Embryo of the 
Cupressineae, with special reference to 
Libocedrus decurrens (*), 21, 281. 
Le Goc, M. J. : Observations on the Centri- 
petal and Centrifugal Xylems in the 
Petioles of Cycads (*), 28, 183. 
Leaf anatomy of Cretaceous pines (*), 22, 
207 ; of Osmundaceae (*), 30, 487. 
Leaf-fall, anatomy and morphology of (*), , 
25, 51; Acer pseudoplatanus, 25, 74; 
Ailanthus glandulosa, 25, 95 ; Baccharis 
halimifolia, 25, 78 ; Betula verrucosa (*), 
25, 62 ; Broussonetia papyrifera, 25, 89 ; 
Carpinus Betulus, 25, 83 ; Castanea sativa 
(*), 25, 52 ; Catalpa Kaempferi (*), 25, 
99 ; Ceanothus Gloire-de-Versailles, 25, 
74 ; Celastrus articulatus (*), 25, 96 ; 
Celtis occidentalis (*), 25, 73 ; Cercis 
siliquastrum, 25, 82; Clerodendron tri- 
chotomum, 25, 81; Cornus Mas, 25, 95; 
C. sanguinea (*), 25, 93 ; Corylus Colurna, 
25, 81; Diospyrus virginiana, 25, 76; 
Ficus Carica, 25, 89 ; Forsythia Fortunei, 
25, 77; Fraxinus excelsior, 25, 98; 
Gleditschia triacanthos (*),25, 79; Halesia 
tetraptera (*), 25, 76 ; Hibiscus syriacus, 
25, 71 ; Juglans nigra, 25, 92 ; J. regia, 
25, 93 ; J. rupestris, 25, 93 ; Ligustrum 
vulgare, 25, 72 ; Liriodendron tulipifera, 
25, 100; Magnolia, 25, ico; Morus alba 
(*), 25, 90; M. nigra, 25, 90; Nyssa 
sylvatica,25,95 ; Phellodendron amurense, 
25, 97 ; Platanus orientalis, 25, 86 ; 
C 2 
Populus balsamifera (*), 25, 69 ; Prunus 
Cerasus, 25, 84 ; P. communis-dulcis, 25, 
85; P. virginiana, 25, 85; Pyrus flori- 
bunda, 25, 74; Quercus palustris, 25, 72 ; 
Rhus typhina (*), 25, 87 ; Ribes nigrum, 
25, 76; R. sanguineum (*), 25, 57; Ro- 
binia pseudacacia, 25, 81 ; Salix caprea 
(*), 25, 62 ; Tilia europaea (*), 25, 60. 
Leaf-trace, evolution of filicinean (*), 25, 
167; relation to formation of compound 
rays in Dicotyledons (*), 25 , 225. 
Lechmere, A. E. : see West, C. 
Lee, D. G. : Notes on the Anatomy and 
Morphology of Pachypodium namaqua- 
num, Welw. (*), 26, 929. 
Lee, Ernest: Biography, 29, 639. 
— Observations on the Seedling Anatomy of 
certain Sympetalae. I. Tubiflorae (*), 
26, 727. 
— Id. II. Compositae (*), 28, 303. 
— The Morphology of Leaf-fall (*), 25, 
5 1 - 
Leersia oryzoides, seedling-anatomy, 29, 
183. 
Leidesia, description of genus and species, 
27, 399; distribution, 27, 409; review of, 
27, 386. 
Leitch, I. : Some Experiments on the In- 
fluence of Temperature on the Rate of 
Growth in Pisum sativum (*), 30, 25. 
Lens-cells (*), 23, 460 ; in Mesembryanthe- 
mum pseudotruncatellum (*), 25, 1137. 
Lepidium sativum, seedling-structure (*), 
27, 813. 
Lepidodendron Veltheimianum, prothallus 
(*),24, 821. 
Leptosyne Douglasii, seedling-structure (*), 
28, 311. 
Lewis, I. F.: The Life-history of Griffithsia 
Bornetiana (*), 23, 639. 
— The Behaviour of the Chromosomes in 
Pinus and Thuja (*), 22, 530. 
Libocedrus decurrens, archegonia (*), 21, 
289 ; embryo (*), 21, 294 ; female game- 
tophyte (*), 21, 286 ; fertilization (*), 21, 
292 ; male gametophyte (*), 21, 282 ; 
seedling-anatomy (*), 22, 702. 
Lichen, Botrydina vulgaris, a primitive (*), 
23, 579; structure and life-history of 
Verrucaria margacea, an aquatic (*), 28, 
241. 
Life, supposed origin in solutions of colloidal 
silica (*), 30, 383. 
Light, perception of, in plants (*), 23, 459. 
Ligniera Alismatis, n. sp. f description, 28, 2 3 3. 
— Bellidis, n. sp., description (*), 28, 232. 
— Menthae, n. sp ., description (*), 28, 232. 
Ligustrum vulgare, anatomy of leaf-fall, 25, 
72. 
Lilium, anomalous bulbils (*), 28, 355 ; fer- 
tilization (*), 27, 1 1 1 ; genesis of male 
nuclei (*), 28, 265 ; heterotypic mitosis 
in embryo-sac mother-cell (*), 23, 343; 
