CLASS XV. ORDER XIII. 
57 
SisTM^'BiyuM. Calyx mostly spreading, eqnal at the base ; silique sub-terete ; 
cotyledons Incumbent, sometimes oblique, flat, (hedge-mustard.) 
Erysi^mum. 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 claw's 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- 
talled, tubular; style I ; stigma 3-clefc ; 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 petais; 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. 
Oplothe'ca. Calyx dotible, outer 2-leaved, convolute, truncate, scarious; 
inner calyx 1-leafed, rauricate, 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, !-seeded. S. 
Acyran'''thes. Calyx double, permanent, membranaceous ; outer calyx 3- 
ieaved, inner 5-leaved, unequal; seed I, covered by the converging calyx. S. 
Malachoden'^dron. Calyx bracted; petals 5-6; limb crenulate ; germ 5-stri- 
ate; stigmas capitate ; capsules 5, united, seed 1. S. 
ORDER VII. HEPTANDRIA. 
Pelargo'nium. Calyx 5-parted, upper division broader, ending in a capillary 
nectariferous tube; corolla 5-petailed, irregular; the 2 upper petals usually 
broader, with coloured veins; filaments 10, 3 of them usually without anthers"; 
arils 5, each 1-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 j 
Style 1 ; capsule 1-celled, many-seeded. S". 
ORDER X. DEOANDRIA. 
Gera'nium. Calyx 5-leaved ; corolla 5-petalled, regular ; nectariferous glands 
5, adhering to the base of the 5 alternating long filaments ; arils 5, 1-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-ceiled, 2-valved. 
Schrank'-'ia. Polygamous; calyx 5-toothed, tubular; petals 5, stamens 8 to 10, 
exsert ; pod 4-valved. 
ORDER XIII. POLYANDRIA. 
Si'da. Calyx simple, angular, 5-cleft; style many-parted; capsules many, 
arranged circularly, 1-celled, 1 or3-seeded. Pedicel articulate under the apex. 
(Indian mallows.) 
Alth-e'a. Calyx double, outer one 6 or 9-cleft; capsules many, arranged cir- 
cularly, l-se.?ded. (hollyhock.) 
Mat/'va. Calyx double, outer one 3-leaved, inner one 5-cleft; capsules many, 
arranged circularly, 1-celled, 1-seeded. (mallows.) 
HiBis"cus. Calyx double, outer one many-leaved; inner one about 5-cleft; 
stigmas 5 ; capsule 5 or 10-celled, many-seeded, (luarsh mallows.) 
