122 KEY TO SUB-CLASSES, ORDERS AND GENERA. 
THALAMIFLORAl—conrt, 
with anthers l-locular (2-locular in Eriodendron) and in inner 
series of filamentsin Bombaa, then with compound digitate leaves 
and with petals; staminal column adnate at base to contorted 
corolia lobes ; often an epicalyx of bracts below the calyx; leaves 
simple Bee oasis Eriodendron, Bombaz, all digi- 
tate) :- be <.. STXee ALVACER, 
(B) Seanenel definite, or sub- definite, in a column or cup aropnd the 
style, with mouth of tuhe nanally with 5-sterile projections oppo- 
site the petals, the intervening sinuses bearing 1--5 bilocular 
anthers ; sometimes ( Eriolena ) in a column around the style 
with short free filaments from the middle upwards, then with 
anthers bilocular ; leaves simple, sometimes compound-digitate, 
and then with no petals :— : ce ... X&X--STERCULIACES, 
(2) Stamens free, or (TILIAcz# rarely) filaments slightly connate ina 
ring or shortly 3—5 adelphous at the base; anthers 2-locular :— 
(A) Stamens indefinite, or if subdefinite (Triumfetta, Corchorus) then 
twice as many as petals; leaves always simple; entire or lobed :— 
XXI—TILIACEZ. 
(B) Stamens always definite :— 
(a) Stamens twice as many, rarely only as many, as petals’; if iso- 
merous, then alternate with petals and quite free ; leaves com- 
peed rates hk or 3-foliate; trees with balsaminous 
sap! Soe ... XXIX—BURSERACEX, 
(b) Ae as many as, ‘and always “opposite, the petals, which are 
usually hooded over the anthers, and are adnate to the fila- 
ments at their insertion ; leaves always simple :— 
XXXVI—RHAMNACEZ, 
CALYCIFLORA. 
(I) Stems woody ; leaves distinct :— 
(i) Ovary apocarpous with 1 or more carpel, or syncarpous with several 
completely closed loculi :— 
(1) Ovules arising from the inner angles or from bases of carpels or 
loculi : — 
(A) Carpels solitary, excentric, style terminal; ovules many or few 
arising from inner angle of carpel ; flowers irregular with 
definite, often diadelphous, stamens, or regular with generally 
indefinite stamens; calyx with odd sepal nearest the axis; 
leaves almost always stipulate :— ia .. XLII—Lerevuminosz, 
(a) Corolla papilionaceons ; petals irregular, imbricated, the upper- 
most (vexillum or standard) outermost, the four others in 
opposite pairs (lateral, ale or wings ; lowest carina or keel) ; 
stamens definite; leaves simple, trifoliate, pele or imparipin- 
nate :— “od LIII-A—PapiLionEz. 
(b) Corolla slightly “irregular ; petals slightly ee imbricate, 
upper innermost in bud; stamens definite ; leaves bipinnate 
or pinnate, if simple (Bauhinia) then deeply bilobed at 
apex :— .. MUIII-B—Cxsatpiniez, 
(c) Corolla regular ; petals valyate generally united above the 
base ; stamens definite or indefinite : — ... XLUITI-C—Minmosex, 
(B) Carpels several ; or if solitary either (RosacE®. sometimes) with 
style not terminal and with odd sepal remote from axis, or 
(ConNNARACEZ, sometimes) with ovules basilar and with exstipu- 
late leaves , flowers hermaphrodite : — 
(a) Carpels free, or if ultimately united, with styles distinct :— 
(a) Stamens indefinite ; leaves stipulate; carpels many free or 
often ultimately united, not seldom carpel 1; ovules 
usually 2 from inner angle of cell; style not terminal ; odd 
sepal remote from axis :— Mer .. XLIV—Rosacez. 
(8) Stamens definite: leaves not stipulate : — 
(*) Carpels quite free; ovules 2 arising from base of the car- 
pels which are often fewer in number than lobes of 
calyx ; fruits follicular :— w+ XLII—CoNNARACER. 
(**) Carpels with free styles, but elsewhere united; fruit cap- 
sular, rarely (R1IBES) a berry :— 
