128 KEY TO SUB-CLASSES, ORDERS AND GENERA. 
INCOMPLET A—cont. 
(*) Flowers glomerulate, axillary or in spikes panicled or cymose 
(very rarely simply spicate, rarely strobilate or sunk in the 
nodes of a jointed rachis), usually ebracteate (very rarely 
both bracteate and bibracteolate) ; perianth membranous 
or herbaceous, occasionally in \-sexual female flowers 
absent ; ovary 1-locular 1-ovuled, style simple or 2—8-lobed 
or 2—5 styles ;-— eee no: ... UXX XT X—CHENOPODIACEA, 
(* *) Flowers racemose, terminal or axillary, usually bracteate 
and bibracteolate ; perianth herbaceous or coriaceous ; 
ovary 1-locular Jl-ovuled, style simple, or carpels - 
several apocarpous each with 1 ovule and 1 style :— 
XC—PHYTOLAGCACER. 
(B) Leaves stipulate, stipules connate as an ochrea (sheath) embra- 
cing the nodes, persistent or (rarely) deciduous and leaving a 
circular scar of attachment of alternate or horizontal lines 
between the attachment of occasionally opposite leaves ; perianth 
membranous or herbaceous, often coloured ; stamens perigynous ; 
ovary 1l-locular 1-ovuled, style arms, or styles, 2--3 :— 
XCI—POLYGONANCEA, 
(II) Flowers 1-sexual, rarely (PIpERACEm, sometimes) hermaphrodite and 
then with no perianth; perianth cften absent or minute, if present simple, 
rarely double (EUPHORBIACE® sometimes) and then the outer whorl conspicuous 
with the stamens either all central or those of the outer series alternate with 
the inner perianth segments, or, if the stamens of the outer series be opposite 
the inner perianth segments, then the seed provided with a testa and the plant 
not parasitic ; ovary superior, very rarely (URTICACE®, sometimes) inferior and 
then the stamens opposite to, and not more numerous than, the perianth 
segments ; anthers never opening by valves :— 
(i) Leafy plants :— 
(1) Leaves simple, or (EUPHORBIACE®, sometimes) digitately (never 
pinnately) compound :— 
(A) Ovary monocarpellary 1-locular, or if syncarpous then 2-more- 
locular ; ovules in each carpel or loculus 1, or 2-collateral, rarely 
(PrIrPERACE®, sometimes) ovary more or less 8—4-locular with 
6—8 ovules in each loculus 2-seriately euperposed on intruded 
placentas and then with 2-sexual flowers :— 
(a) Leaves exstipulate alternate ; aromatic trees ; flowers 1-sexual :— 
(a) Flowers fascicled or umbellate; perianth gamophyllous, 
calycnie, 3-(rarely 2—4-) lobed; stamens monadelphons ; 
ovary 1l-locular l-ovuled in the base of the respective 
perianths; ovule erect, albumen copious fleshy, embryo 
very minute :— See igi cee .. XCV—Myristicacn®. 
(8) Flowers in cylindric bracteate catkinlike spikes, male spikes 
solitary, fascicled, or panicled, with sometimes a female 
flower on top, female spikes axillary, bracts 1--4 flowered ; 
stamens 3—6 on a torus udnate to the bract, filaments short 
free or connate, anthers erect 2-celled ; ovary 1-celled 2—-4,* 
bracteate, style 2-fid stigmatose inwardly, ovule 1 erect ; 
albumen o, embryo straight :— .. CVI—(bis). MyricacEa&. 
(b) Leaves stipulate :— 
(a) Ovary 1-locular 1-ovuled, or if syncarpous (PIPERACE®, some- 
times) then either the carpels only partly united, or if 
completely united the loculi incomplete, and then in either 
case the oyules in each loculus more than 2; flowers 
usually minute; perianth either simple or O :— 
(*) Seeds with copious floury albumen and minute embryo; 
flowers in spikes (very rarely in racemes), and rarely 
l-sexual; perianth almost always O; leaves usually 
alternate, smelling more or less of pepper when crushed :— 
XCILI—PIPERACER. 
(**) Seeds with little or no albumen, embryo large filling the 
seed coat, or if albumen copious, then fleshy and the 
embryo nearly or quite as long as the albumen :— 
