6a6 



INDEX. 



Actaea racemosa, 249. 



Adansonia digitata, annual 

 rings, 504. 



Adenocalymma, 574. 



Adenophora Lamarckii,434. 



Adiantum, root structure, 

 363 (Fig. 169) ; vascular 

 system, 301. 



Adiantum denticulatum,427. 



Adoxa Moschatellina, endo- 

 dermis, 122. 



^chmea, 411. 



^chmea farinosa, wax, S3. 



jEgopodium, collenchyma, 

 119; sap passages, 449. 



^gopodiura Podagraria, se- 

 cretory reservoirs, 449. 



Aerial root-sheath of or- 

 chids, 227. 



Aerides odorata, 165. 



^rva javanica, 591, 593. 



jEschynanthus, parenchyma, 

 411. 



.SIschynoraene, 499. 



Asculus, 108, 470, 496; 

 cortex, 404 ; crystals, 530; 

 fibre, 131 ; lenticels, 562 ; 

 medullary rays, 489; peri- 

 derm, 558 ; root-cap, 413; 

 thickening,47i;tracheides 

 and fibres, 483; vascular 

 system, 244, 353, 391, 



536. 

 .S^sculus Hippocastanum, 



108,479, 540 i fibres, 13; 

 crystals, 142. 



iEsculus macrostachya, 244. 



^sculus rubicunda, 489. 



jEthusa, vascular system, 

 242, 309. 



iEthusa Cynapium, 242. 

 309. 



Agapanthus, stomata, 36. 



Agapanthus umbellatus, 36- 

 139. 



Agathosma, mucilage, 73; 

 oil-cavities, 207. 



Agave, sclerenchyma, 422, 

 425; stomata, 37. 



Agave americana, 77 ; cuti- 

 cle, 81 ; vascular system, 

 305 ; vi^ax, 85. 



Ageratum conyzoides, oil- 

 passages, 446, 447. 



Aglaonema, laticiferous 



tubes, 436 ; secretory re- 

 servoirs, 444 ; vascular 

 system, 268. 



Aglaonema marantsefolium, 



445- 

 Aglaonema simplex, 4 36,445. 

 Agrostis vulgaris, stomata, 

 ■'50. 

 Ailanthus, lenticels, 563 ; 



ligneous bundle, 495 ; me- 

 dullary rays, 489 ; resin- 

 passages, 202, 453. 



Ailanthus glandijlosa, annual 

 rings, 476 ; cortex, 404 ; 

 gelatinous layer, 482, 502, 

 509. 



Air-cavities, structure of the 

 walls, 215. 



Air-pores, 45; absence of, 

 45; on rhizomes, 46; on 

 submerged parts, 46. 



Air-spaces, 210; of water 

 plants, 210. 



Aira caryophyllea, stomata, 

 50. 



Aira flexuosa, stomata, 49, 

 50. 



Ajuga genevensis, stomata, 

 36. 



Alburnum, 507. 



Alchemilla vulgaris, water 

 pore, 52. 



Aldrovanda, 67 : glands, 100 ; 

 hairs, 62 ; vascular sys- 

 tem, 277, 369. 



Aletris fragrans, 618, 621. 



Aleurites triloba, 162. 



Alisma, 10, 205 ; air-spaces, 

 217; root development, 

 397; vascular system, 327, 



Alisma Plantago, 10, 165. 



AlismacesE, air-spaces, 213; 

 milk canals, 202, 443 ; 

 vascularsystem, 371; scle- 

 renchyma, 419. 



Allium, air-spaces, 214 ; apex 

 of root, 10 ; crystals, 142 ; 

 latex, 146 ; parenchyma, 

 409, 410; raphides, 142; 

 secretory sacs, 146 ; sto- 

 mata, 37 ; vascular system, 

 267, 357. 



Allium ascalonicum, 147. 



Allium Gepa, 7 1 ; secretory 

 sacs, 147 (Fig. 56); vas- 

 cular system, 267, 357. 



Allium fistulosum, 147. 



Allium nigrum, 411. 



Allium Porrum, 147, 357. 



Allium sativum, 142. 



Allium ursinum, 4ro. 



Alnus, 502 ; annual rings, 

 476; bast fibres, 527; 

 hairs, 90 ; ligneous bundle, 

 495 ; medullary rays, 489, 

 492 ; periderm, 548 ; pith, 

 403 ; vascularsystem, 353. 



Alnus glutinosa, 489, 495 ; 

 secretions, 138; crystals, 

 142, 530 ; gelatinous 

 layer, 482. 



Alnus incana, 489. 



Alnus viridis, 493. 



Alocasia, vascular system, 

 268, 269, 436. 



Alocasia odorata, 268. 



Aloe, cuticle, 76, 81; mu- 

 cilage, 143 ; parenchyma, 

 116, 408; sap-cavities, 

 148; sclerenchyma, 425; 

 secondary thickening, 

 618; secretory sacs, 147, 

 148. 



Aloe africana, secretions, 

 138. 



Aloe arborescens, 408; se- 

 cretions, 138, 148. 



Aloe atrovirens, 408. 



Aloe ciliaris, 148. 



Aloe cuspidata, 408. 



Aloe plicatilis, 148, 408, 618. 



Aloe soccotrina, epidermis, 

 79-148, 408. 



Aloe tesselata, 408. 



Aloe verrucosa, 425 ; section 

 of leaf (Fig. 25), 71,78; 

 wax, 82. 



Aloe vulgaris, 148. 



Aloinese, 618. 



Alopecurus geniculatus, sto- 

 mata, 50. 



Alopecurus pratensis, 419; 

 stomata, 50. 



Alsine, vascular system, 243, 



Alsophila, sclerenchyma,4 2 8 , 

 429; sieve-tubes, 181; 

 vascular system, 286, 291, 

 312. 



Alsophila aculeata, 312. 



Alsophila aspera, hair-struc- 

 tures, 64. 



Alsophila blechnoides, 286, 

 429. 



Alsophila Haenkei, 291, 294. 



Alsophila microphylla, 118, 

 293, 294,428. 



Alsophila pruinata, 286, 287, 

 429. 

 , Alsophila radens, 291. 



Alsophila villosa, 293. 



Alstroemeria, 139,410. 



Alternanthera, vascular sys- 

 tem, 249. 



Alternanthera amcena, 62. 



Alternanthera spinosa, hairs, 

 62, 591. 



Alternanthera Verschaffeltii, 



S9I- 



Althaea rosea, 144. 



Althenia, vascular system, 

 277, 278, 368. 



Alyssum, 106. 



Alyssu.n petraeum, hairs, 61. 



Amarantaceae, anomalous 

 structure, 590, 593 ; me- 

 dullary bundles, 248. 



Amarantus, anomalous 



