KEY TO SUB-CLASSES, ORDERS AND GENERA. 119 
THALAMIFLOR Al—cont, 
or (TERNSTRaMIACER, Eurya sometimes) attached to base of petals; (Bixacex, 
Hydnocarpus), then trees with dicecious flowers and broad serrate leaves :— 
(A) Sepals 3 or fewer, deciduous; Petals more or loss resembling 
Sepals in 2-many more or less distinctly ternate whorls ; 
carpels many in 1 or more whorls; trees and shrubs with 
alternate leaves :— or soe tee - ITI—Magnonicer 
(B) Sepals 4 or more; if 2--3 (Gurtirer™, Ochrocarpus) then trees 
with opposite or ternate leathery leaves and resinous juice :— 
(a) Petals few, usually 4 or 5, rarely 8--12 or 10, or 12—16 (Bixacex, 
Asteriastigma) in one (rarely two) whorls; if many (Ranun- 
CULACEM, Navavelia) then like staminodes in terrestrial] 
climbers with opposite cirrhiferous leaves; if in a continuous 
spiral with sepals and bracts (TeRNaTR@MIAcE®, Camellia) 
then in terrestial shrubs :— 
(a) Sepals deciduous :— 
(*) Carpels when ripe usually quitefree:— .,, I—RanunouLacem. 
(**) Carpels coherent into a l-locular ovary with parietal or 
(BrxacE&, sometimes) intruded placentze :— 
(+) Fruit either a 2-valved sessile, or stipitate capsule with 
marginal placentz or a berry separated from the torus 
by a long gynophore ; floral organs 4-merous ; embryo 
small at the base of the albumen:— ... VII—Capparmacrm. 
(++) Fruit either fleshy and sessile, or a capsule with median 
* placentae ; sepals 4-6, petals often O, or 4—6, rarely 
(Asteriastigma) 12—16, embryo considerable near the 
middle of the albumen :— ues see .. X—BIXAcEsx 
(8) Sepals persistent : — 
(*) Leaves alternate :— 
(+) Stamens quite free from petals :— 
(§) Pistil of 1-many carpels more than one ovuled, distinct 
or cohering in the axis of the flowers ; styles quite 
free throughout, terminal or subdorsal; disk none: 
fruit of 1 or more distinct follicles or baccate by the 
accrescence of the enclosing calyx :— ,..  II—Dinueniacem, 
(§§) Pistil deeply lobed, lobes oblique, embedded in an 
acerescent disk, loculi l-ovuled; styles connate 
central ; fruit of 3—10 drupes seated on broad disk, 
each one seeded :— “> .. XXXITI—Ocrnacem. 
(§§§) Pistil of 3, 5, or 10 carpels forming a J-locular ovary, 
crowned by a single style; fruit capsular 5-or 10- 
celled, or imperfectly 3-celled :— .» IX--Cistacum, 
(tt) Stamens attached to the bases of, and deciduous with, 
the petals :— =A ae X VI—TrrnstReMIAce®, 
(**) Leaves opposite :— 
(+) Flowers almost always 1-sexual or polygamous and 4- 
merous, if 5-merous then with resinous juice; leaves 
coriaceous not gland-dotted:— ... se XV—GUTTIFERR, 
(+t) Flowers hermaphrodite, 5-merous; leaves herbaceous 
gland-dotted :— ... af bide -.» KIV—Hypsricaces 
(2) Stamens definite, 10 or fewer :-— 
(A) Flowers usually 3-merous, if 2-merous (some MrnisperMacr#) 
then 1-sexual; carpels free or solitary; stamens 6 free equal 
opposite the petals ; leaves alternate :-— 
(a) Flowers minute, 1-sexual ; scandent (Cocculus, 1 erect) shrubs ; 
carpels 3, seeds usually reniform :— ... .. V—MENISPERMACES. 
(b) Flowers hermaphrodite ; erect shrubs ; carpel solitary; anthers 
dehiscing by two valves :— 4 -. VI—BERBERIDACES, 
(B) Flowers 4-5 merous ; pétals usually 5 (sometimes 4) ; perfect 
stamens as many, or twice as many, as petals oy sepals (except 
all PoLYGALACEm and some SAPINDACE®, where anisomerous) :— 
(a) Ovary 1-celled ; stamens and petals isomerous :— 
(a) Placentas 3 parietal ; sepals usually persistent; stamens as 
many as petals; petals often irregu, r; leaves alternate 
(rarely opposite):— .. oe va ae VII—Vi0Lacex 
