CLASS XV. ORDER XIII. 57 
Sisym"brium. Calyx mostly‘Spreading, equal at the base; silique sub-terete; 
cotyledons incumbent, sometimes oblique, flat, (hedge-mustard.) 
ErysiAvjum. Silique sub-terete, often short; valves concave, nerveless, not 
heeled ; calyx equal, spreading; cotyledons accumbent. (English water-cress.) 
Hes^peris. Calyx closed, furrowed at the base, shorter than the claws of the 
petals; petals bent obliquely, linear or obovate; silique 4-sided, 2-edged ; stig¬ 
ma sub-sessile of 2 lobes ; cotyledons incumbent, (rocket.) 
CLASS XV. MONADELPHIA. 
ORDER III. TETANDRIA. 
Sisiryn^chium. Spatha 2-leaved ; perianth 0 ; corolla superior, 6-cleft or 6-pe- 
ialled, tubular: style 1 ; stigma 3-cleft; capsule 3-celled. (blue-eyed grass.) 
Tamarin /; dus. Petals 3, ascending; 3 filaments longer; legume 1 to 3-celled, 
pulpy inside, (tamarind) Ex. 
Tigri'dia. Calyx 0; petals 6; tube made by the union of the filaments, long, 
(tiger-flower.) Ex. 
ORDER V. PENTANDRIA. 
Passiflo'ra. Calyx 5-parted, coloured; corolla 5-petalled, on the calyx; nec¬ 
tary a triple, filamentous crown within the petals; gourd-like berry,pedicelled. 
(passion-flower.) S. 
Ero / dium. Calyx 5-leaved; corolla 5-petalled ; nectariferous scales 5, alter¬ 
nating with the filaments ; arils 5, 1 seeded, awned ; beaked at the base of the 
receptacle ; awn spiral, bearded within. Taken from geranium, (stork's 
bill.) Ex. 
OplotheTa. Calyx double, outer 2-leo.ved, convolute, truncate, scarious; 
inner calyx 1-leafed, muricate, somewhat 5-cleft, downy, longer than the outer 
calyx; nectary cylindric, 5-toothed, stamens in the nectary; stigma single, 
hairy; capsule bladder-like, enclosed in the calyx, l-seeded. $. 
Acyran^thes. Calyx double, permanent, membranaceous ; outer calyx 3- 
leaved, inner 5-leaved, unequal; seed 1, covered by the converging calyx. S. 
Malachoden"dron. Calyx brac.ted; petals 5-6; limb crenulale ; germ 5-strx- 
ate; stigmas capitate; capsules 5, united, seed 1. S. 
ORDER VII. HEFTANDRIA. 
Pelargo'nium. Calyx 5-parted, upper division broader, ending in a capillary 
nectariferous tube; corolla 5-petalled, irregular; the 2 upper petals usually 
broader, with coloured veins; filaments 10, 3 of them usually without anthers; 
arils 5, each l-seeded, awned ; some of the awns spiral, (stork geranium.) Ex. 
ORDER VIII. OCTANDRIA. 
Pis // tia. Spatha ligulate, hooded ; corolla 0; filament lateral; anthers 3 to 8; 
style 1; capsule 1-celled, many-seeded. S. 
ORDER X. DECANDRIA. 
Gera'nium. Calyx 5-leaved ; corolla 5-petalled, regular; nectariferous glands 
5, adhering to the base of the 5 alternating long filaments ; arils 5, l-seeded, 
awned, beaked at the elongated top of the receptacle; awn naked or smooth 
within, straight, (cranebill, false crowfoot, herb robert.) 
Aca'cia. Polygamous ; calyx tubular, 5-toothed; petals 5; stamens 5 to 10, 
exsert; pod 1-celled, 2-valved. 
SchrankAa. Polygamous; calyx 5-toothed, tubular; petals 5, stamens 8 to 10, 
exsert; pod 4-valved. 
ORDER XIII. POLYANDRIA. 
SAda. Calyx simple, angular, 5-cleft; style many-parted; capsules many, 
arranged circularly, 1-celled, 1 or 3-seeded. Pedicel articulate under the apex. 
(Indian mallows.) 
Althea. Calyx double, outer one 6 or 9-cleft; capsules man\>arranged cir¬ 
cularly, l-seeded. (hollyhock.) 
Mat/'va. Calyx double, outer one 3-leaved, inner one 5-cleft; capsules many, 
arranged circularly, 1-cel.led, l-seeded. (mallows.) 
Hibis"cus. Calyx double, outer one many-leaved; inner one about 5-cleft; 
stigmas 5 ; capsule 5 or 10-celled, many-seeded, (marsh mallows.) 
