CLASS XV. ORDER V. 



petals longest ; silicle many-eccded, emar- 

 ginate. (candytuft.) E)x. 



THY'sANOCAii^'rus. Silicic obnvatc, pla- 

 no-convex, broad-winged at both margins, 

 cijiarginatc at tlie apex, 1-celled, one seed 

 ed ; seed broad-obovate, pendulous. Flow- 

 ers small, and wbite. 



CoRONo'pus. Silicle reniform, compress- 

 ed, wrinkled ; cells valveless, l-eeeded. 

 6'. 



ORBER II. SILIQUOSA. 



Dknta'ria. Silique lanceolate ; valves 

 flat, nerveless, often opening elastically ; 

 receptacles not winged ; funicle dilated ; 

 seeds in a single series, ovate, not margin- 

 ed ; cotyledons accumbent. (tooth-root.) 



Nastur"tium. Silique teretish, abbrevi- 

 ated or declined ; stigma somewhat 2-lobed; 

 ealyx equal at the base, spreading ; seeds 

 small, irregularly in two series, without 

 margins. 



Turki'tis. Calyx converging, erect ; 

 silique very long, striate, 2-edged; valves 

 keeled or nerved ; seeds arranged in a 

 double series; cotyled^is accumbent. 

 (tower mustard.) 



Cardam^ine. Calyx leaves spreading 

 but little ; stigma entire ; a single gland 

 between each of the short stamens and the 

 calyx ; silique with truncate margins, 

 linear, long, bursting ela.stically with revo- 

 lute valves, narrower, but equalling the 

 length of the partitions ; seed with a slen- 

 der funicle, not margined. (American wa- 

 ter-cress.) 



Streptan'''thu.s. Calyx erect, colored ; 

 petals dilated, having twisted, channeled 

 claws ; glands none ; stamens with fila- 

 ments subulate, and thickened at the base ; 

 silique very long, angled, compressed ; seeds 

 in one series, flat, margined ; cotyledons 

 accumbent. 



Ah"abis. Glands 4, otic within each 

 leafet of the erect calyx, of the size of the 

 rcflexed scale ; silique compressed, toru- 

 lose, sub-divaricate ; valves flat, 1-nerved; 

 eeeds arranged in a single series ; cotyle- 

 dons accumbent. (wall-cress.) 



CHKiRAN"THas. Calyx closed, two of the 

 leafets gibbous at the base ; petals dilated ; 

 sili(iue, when young, with a glandular tooth 

 each side ; stigma 2-lobed ; seed flat, some- 

 times margined, (stook-july flower, %vall- 

 flower.) 



PholNICau'lis. Calyx colored, nearly 

 fqual at the base, much shorter than the 

 jntire unguiculatc petals ; silique ensiform, 

 acuminate, flat, not opening elastically ; 

 cells about 3-seeded ; valves with a promi- 

 nent central nerve ; seeds large, in a single 

 series, not margined. 



Sina'pis. Calyx spreading; corolla v^ith 

 straight claws; glands between the short 

 stamens and live pistil, and between the 

 long stamens and the calyx ; partition ex- 

 tending beyond the valves of the silique, 

 ensiform , seeds in a single series, (mus- 

 tard.) 



B.ArHA'NU.s. Calyx clo.sed, setose ; silique 

 loitjse, terete, not opening by valves, 1 or 



2-celled ; glands between the short stamens 

 and pistil, and between the long stamen:' 

 and the calyx, (radish.) 



Wa'rka. Silique 2-celled, stiped, flat 

 with a seed-bearing margin on both sides , 

 •seed flattish, striate ; petals with long rlaw.s, 

 spreading ; calyx deflected, caducctus, co- 

 lored. 



Bras"sica. Calyx erect, converging; 

 partition extending beyond the valves of 

 the silique ; seed globose ; glands between 

 the short stamens and pistil, and between 

 the long stamens and calyx, (cabbage, 

 turnip.) Ex. 



Barbare'a. Silique 4-edged ; cotyledons 

 accumbent ; .seeds in a single row ; calj'x 

 equal at the base, erect ; sliorter filaments 

 with intermediate glands. (water-rad- 



ish.) 



Sisym"brium. Calyx mostly spreading, 

 equal- at the base ; silique sub-terete ; coty- 

 ledons incumbent, sometimes oblique, flat, 

 (hedge-mustard.) 



Ery'simum. Nastur'^tium. Silique sub- 

 terete, often short ; valves concave, nerve- 

 less, not keeled ; calyx equal, spreading ; 

 cotyledons accumbent. (English water- 

 cress.) 



Hes'^peris. Calyx closed, furrowed at 

 the base, shorter than the claws of the pe- 

 tals ; petals bent obliquely, linear or obo- 

 vate; silique 4-sided, 2-edged; stigma sub- 

 sessile of 2 lobes ; cotyledons incumbent, 

 (rocket.) 



CLASS XV, MONADELPHIA. 

 order III. tetandria. 



SisiRYN^CHiuM. Spatha 2 -leaved ; peri- 

 anth ; corolla superior, G-cleft or 6-petal- 

 led, tubular ; style 1 ; stigma 3-cleft ; cap- 

 sule 3-celled. (blue-eyed grass.) 



Tamarin"dus. Petals 3, ascending; 3 

 filaments longer; legume 1 to 3-celled, 

 pulpy in.side. (tamarind.) Ex. 



Tigri'dia. Calyx ; petals 6 ; tube made 

 by the union of the filaments, long, (tiger 

 flower.) Ex. 



ORDER v. PEN'TAN-DRIA." 



Passifi.o'ra. Calyx 5-parted, colored-, 

 corolla 5-petalled, on the calyx ; nectary a 

 triple, filamentous crown within the petals ; 

 gourd-like berry, pedicelled. (passion-flow- 

 er.) S. 



Ero'dium. Calyx 5-leaved ; corolla 5- 

 petalled ; nectariferous scales 5, alternating 

 with the filaments ; arils 5, 1-seeded, awn- 

 ed ; beaked at the base of the receptacle ; 

 awn spiral, bearded within. Taken from 

 geranium, (stork's bill.) Ex. 



Opi.othe'ca. Calyx double, outer 2- 

 leaved, convo/ute, truncate, scarious; inner 

 calyx 1-leafed, muricate, somewhat 5-cleft, 

 downy, longer than the outer calyx ; nec- 

 tary cylindric, S-toothed, stamens in the 

 nectary; stigma single, hairy; capsule 

 bladder-nke, enclosed in the calyx, 1 seed- 

 ed. S. 



Achyran"thes. Calyx double, perma- 

 nent, membranaceous ■ outer calyx .'Muav 



