•] VIII. CRUCIFERiE (OLIVEtt). 63 



Moxamb. Distr. Zanzibar, Mombaze Island, Boivin {Foumier). 

 I do not know this plant or the following. 



5. P. raraosissima, Hochst. in Kotschy, PI. Nub. Leaves linear-lan- 

 ceolate. Siliquas short, appressed. 



file Land. Nubia, Kotschy {Foumier). 



6. P. segyptiaca, Turr. ; DC. Syst. Veg. ii. 287. Shrubby, with re- 

 peatedly forking, rigid, terete branches, hoary with closely-appressed hairs. 

 Leaves linear, hoary. Racemes strict, with subdistant flowers ; pedicels 

 usually from 1 to, at length, 4 lines. Calyx \ in. ; sepals somewhat conni- 

 vent above. Siliqua broadly oblong-elliptical, hoaiy, ascending, about \ in. 



Nile Land. Nubia (Schiceinf. and Asch. Emm.). 



7 Browa described in Denham and Clapperton (App. 217), under the name of F. ? stylosa, 

 I tot gathered in the Sahara, with oblong or shortly oval siliquas; style equalling the 

 readth of the valves and 2-lobed stigma. The specimens were very imperfect, and I have 

 not seen them. 



8. SISYMBRIUM, Linn. ; Benth. et Hook. f. Gen. PL i. 77. 



Sepals equal or the lateral saccate at the base. Petals unguiculate. Siliqua 

 narrow-linear, often elongate, terete or compressed, many-seeded; valves 

 usually faintly 3-nerved. Septum membranous. Persistent style short; 

 stl ? raa undivided or minutely 2-lobed. Seeds in one or sometimes _ two 

 jgj, not bordered, usually oblong or ellipsoidal with short free funicles. 

 JiaiUcal incumbent.— Usually annual or biennial herbs. Radical leaves 

 ei "ire, lobed or pinnatifid, often rosulate. Flowers usually yellow or white. 



SP iL rather , Iarge and vei 7 difficult genus, many of the species resembling those of other 

 fS S? ° ften v "iable. Most of them belong to Europe, Western and Northern Asia, 

 fle Hl malaya. A few species occur at the Cape, as well as in America. 

 jjjj !»*» entire or dentate. 



Had 



a . ~»» «i ucuiaie. 



o in. or taller. Siliquas ascending, i in. long or more, about 



>» thick as the Jedicel L * Thttlvmmn ' 



I J 3 m. Siliquas patent or ascending, 3-4 lines long, about 

 M times as thick as ; the pedicel . 2. S. Pumlio. 



T n T™ Pinnatifid. 

 "; ' about 6 in. high. Flowering branches nearly leafless, flow- 



e "ng from near the base . . Z. S. falcalum. 



«st, ample or branched, 1-3 ft. or more. , _ ... 



Jnu it pedicels about 1 line. Siliquas straight, subulate . . . 4. S. erysimoides. 

 *"'t pedicels H in- or longer. 

 ^' av es pinnatipartite or runcinate ; cauline lanceolate, toothed, _ 



usually petiolate h. S. Ino. 



Leaves runcinate, sessile,' glauc'escent 6 - 5 - «**""•"**• 



*L S * T^aUanum, Gay et Monn. in Gaud. Fl. Helv.u. 348. An erect 

 obU ? nual more or less hispid-pubescent below. Leaves mostly radical, 

 sZ Ceolate dentate or entire ; cauline few, lanceolate. Flowers very small. 

 4»as very narrow-linear, on slender spreading pedicels. 



Coml ^ Ab yssinia, Bouahit mountain, Schimper (Bichard). 

 mmon ln Europe and temperate Asia, occurring also in N. America and at the Cape. 



