132 KEY TO SUB-CLASSES, ORDERS AND GENERA. 
KEY TO GENERA. 
I—RANUNCULACEA— 
I. Climbers ; leaves opposite ; sepals petaloid ; carpels 1-ovuled, pendulous ; fruit 
a head of apocarpous achenes, often feathery long styled :— 
(i) Petals O :— vs ck ae Lh ae ae see i—Clematis. 
(ii) Petals many linear :— ... fs nae a a fod ii—Naravelia. 
II—DILLENIACEA— 
{Anatomical features.—Hairs never glandular, always one celled, sometimes 
stellate, and surface of leaves often rough due frequently to short thick walled hairs, 
or to siliceous concretions inthe epidermis, or to sacs filled with raphides protruding 
above the surface. Medullary rays in the wood are very broad, hence on radial 
section the remarkably mottled appearance of the wood, Wood fibres have always 
bordered pits. | 
| Botanical note.—Genus LXXVI—Sawrauja is sometimes, perhaps more correctly, 
included in this order ; the leaves have the general appearance thereof. | 
I. Stamen filaments thickened upwards, anthers short, cells remote oblique ; 
climbers :— 
(i) Carpel solitary :— to ie nee be ye Ses iii—Delima, 
(ii) Carpels 2—5:— ... see noe “6 ie ee --. iv—Tetracera, 
II. Stamen filaments not thickened upwards, anthers with parallel cells; 
Trees :-— ae aes are He ie ven ne Bae xt v—Dillenia. 
IlI--MAGNOLIACEA— 
[Anatomical featuwres.—Sacs containing resin in the parenchyma of the leaves, 
often visible as transparent dots; wood fibres with bordered pits (one foreign 
species consisting entirely of such pits) without vessels, resembling the wood of 
CONIFERS, | 
I, Stipules conspicuous, convolute and sheathing the young foliage, deci- 
duous; carpels in many whorls on elongate axis :— 
(i) Gynophore sessile, carpels of fruit indehiscent and deciduous :— 
(1) Sepals deflexed ; leaves truncate at apex:— ... ... vi—Liriodendron. » 
(2) Sepals erect ; leaves not truncate at apex:— ... ee viii—Talauma. 
(ii) Gynophore sessile, carpels of fruit dehiscent :— ae ix—Magnolia. 
(iii) Gynophore stalked, carpels of fruit dehiscent :— x—Michelia. 
IT. Stipules O:— 
(i) Carpels in one whorl ; aromatic evergreen tree :— Nae vii—Illicium. 
(ii) Carpels capitate ; climbers :— =e 360 bic eae xi—Kadsura. 
TV—ANONACH Al— 
[Anatomical featwres.—Spherical or lenticular cells containing resin in the paren- 
chyma of the leaves, often visible as pellucid dots. On the transverse section the 
timber of all species shows numerous fine transverse bars at right angles to the 
medullary rays, consisting of wood parenchyma; hairs, when present 1-celled or few- 
celled, stellate in some genera. | 
[Bctanical note-—This order is very closely allied to MyrisvicAcEm, which are 
properly speaking merely apetalous ANONACES. | 
I. Ripe carpels distinct, indehiscent, mostly stalked :— 
(i) Quter 3 petals small, similar to sepals :— 
(1) Ovules 6 or more ; inner petals always saccate at the base :— 
xxv—Saccopetalum, 
(2) Ovules 1—2 ; inner petals mostly thin, flat :— 
(A) Stamens few or many, connective acute:—__... ... | xxiv—Miliusa. 
(B) Stamens always many, connective broad:— ... ... Xix—Pheanthnus, 
(ii) Petals uniform in shape and texture; flowers globose or campanuate :— 
(1) Petals imbricate in bud ; ovules 6—12 :— Bo, .. Xxvili—Sagerzea. 
_(2) Petals valvate in hud ; ovules 1—2:— S83 ws Xvili—Popowia. 
(iii) Petals uniform, erect or spreading ; ripe carpels numerous :— 
(1) Petals valvate in bud ;— 
