XlVl CLASS XV. 



PAGE. 



Dii>TERiCA*THCS. — Corolla funnel-form, the spreading limb nearly regularly 

 and equally 5-cleft. Anthers arrow-shaped. — Flowers blue or purple, 

 clustered. 234 



THUNB2RQIA.— Calyx double, 5-cleft, with 2 bracts. Corolla bell-shaped, with 

 an inflated tube, and 5-lobed limb. — Exotic climbing herbs, with showy 

 axillary Jlcnvers. 235 



* * * * Herbs destitute of green foliage. 



EpiPHEGUB. — Upper flowers sterile, with a tubular corolla; the lower fertile, 



with the corolla minute and net expanding. 231 



Conopholis.— Flowers in a dense spike, scaly tbroughout. Corolla ventricose, 



2-lipped. Stamens protruded. 231 



Aphtxlon. — Flowers solitary on naked peduncles or scapes. Corolla tubular. 



Stamens included. 232 



CLASS XV. TETRAD YNAMIA.— G Stamen* 4 long 



and 2 short 



Order I. Siliculos.e. — JW short and broad. 



I. Thiaspi. 2. Capset.la. 3. Ekiopuola, page 25. 4. Lipidicm. 5. Camlu.va. 



6. Cochleabia page 26. 



CULTWATED EXOTICS. 

 7. Altsscm. 8. Lcnaria. 9. Iberis, page 27. 10. IcATis, page 28 



Order II. Siliquosje. — Pod mostly Jong and narrow. 



II. Dent aria.— Silique narrow-lanceolate, with the long style.— Stem with a 



few divided leaves, and white-purple fiowers. 2S 



12. Bafearea. — Pod 4-:ngled, and somewhat 2-edged. — Leaves lyrattty pin- 



nutijid. Flowers yellow. 29 



13. NaBTCIMTCM. — rod nearly terete, linear-oblong and curved upwards like 



a silicle. Seeds small, irregularly 2-rowcd in each cell, margioteBS, — 



Aquatic or marsh plants, with yellow or white Jiow-t s, and pinnate ur 

 vinnatijid leaves. (The generic description on page 29 is wrong.) 29 



14. Arabis. — Pod linear, plane ; seeds in a single row in each eell. — Fhwe.rs 



white. 30 



15. Iodaxthus.— Pod linear, elongated, terete. Style thick. — Flowers violet- 



purpk, inpanicled racemes. 30 



16 Cardamixe. — Pod linear, flattened, usually opening elastieally. — Flowers 



whits or purple. ' 31 



17. Stsimbricm. — Pod terete or jather 4 to 6-sided. — Flowers small, white or 



yellow. 31 



18. Erysimum.— Pods columner. 4-sidod. — Flowers yellow. 32 



19. SiNAPSie. — Pods nearly terete, wiCh a short beak. — Leaves lyrate, pinnalifiu 



or incised. Flowers yellow. 32 



20. Haphanus. — Pod elongated, transversely ninny-celled. — Flowers yellow or 



purplish. 33 



21. Cheiranthus. — Pod terete or compressed. Stigma 2-lobed or capitate. — 



Flowers, frag rant showy, pale-purple or orange-yellow. 33 



CULTIVATED EXOTICS. 



'22. HESPKRIS.— Pod 4-sided, 2-edged or sub-terete. Stigmas forked. — Flowrs 



purple. 34 



23. Matthiola.— Pod terete. — LJerbaceous or shrubby plants, clothed with a htavy 



pubescence. 34 



24. Bbassica.— Pod sut-compresscd.— Flowers yellow. 34 



