Sisi/mbrium.'\ viii. ckuciferk (olivek). C.j 



S. subulatum, Fourn., Kcclicrches Crucif. 72. Much branched annual or biennial. 

 Leaves undescribed. Fruiting racemes dense, elongate, redicels, in fruit, crecto-patent, 

 2 lines long, slightly thickened. Siliqua very narrow-linear, torulosc, crecto-apprcssed, su- 

 bulate, \-\\ in. long, glabrous; valves 3-nerved ; stigma sessile. 



Nile Iiand. Abyssinia, Schimper. 



Taken from M. Fournier's memoir. 



Heliophila. — A large Cape genus, extends northwards to Natal, but I have seen no 

 tropical specimens. It is characterized by the peculiar embryo, the cotyledons being twice 

 folded transversely. The leaves arc entire or variously cut, the siliquas long or short, con- 

 tinuous or the margins sinuate and moniliform. The flowers are white rose yellow or blue, 

 with equal sepals. 



9. BRASSICA, Linn. ; Benth. et Hook. f. Gen. PI. i. 84. 



Sepals treat or spreading, the lateral often saccate at the base. Siliqua 

 linear, elongate or narrow-linear-lanceolate, beaked, beak sometimes 1-seeded; 

 valves costate, with or without lateral neryiires ; stigma truncate or 2-lobed. 

 Seeds not margined or winged,, globose, ellipsoidal or compressed, in one 

 series. Eadicle incumbent, more or less sheathed by the conduplicate or 

 concave cotyledons. — Herbs sometimes woody below, glaucous glabrous or 

 pilose-hispid. Radical leaves lyrate or pinnatipartite, rarely nearly entire. 

 Plowers usually yellow. 



A large and difficnlt genus, including several widely cultivated and very variable specie;. 



as Cabbage {B. oleraced) and Mustard, B. (Sinapis) alba and nigra. 



The species are most numerous in the temperate zone of the Old World. Two or three 



grow at the Cape. 



Cauline leaves narrowed below or petiolate. Siliquas ascending ; valves 



with midrib aud lateral nervures 1. B.juncea. 



Cauline leaves narrow, petiolate. Siliquas short, appressed ; valves 

 ' without distinct lateral nervures 2. B. nigra. 



Cauline leaves ovate-lanceolate, amplexicaul. Siliquas erect or ascend- 

 ing ; valves with median and lateral nervures 5. ^. campesiru. 



Radical leaves spreading, pinnatipartite with numerous toothed seg- 

 ments. Siliquas divergent with a 1-seeded beak 3. ^. Tournefortii. 



Glabrous or minutely setulose. Leaves entire or dentate, narrowed 



below, uppermost subamplexicaul. Siliquas spreading .... ^. B. Sch imperil 



1. B. {Sinapis) joincea (Linn.), DC. Syst. Veg. ii. 612. An erect, 

 usually more or less branched 'herb, attaining 2-3 ft. or more, glabrous or 

 minutely setulose below. Lower leaves lyrate-pinnatifid or entire; cauline 

 more or less lanceolate, entire or dentate. Siliquas usually 1-2 in., linear or 

 iiarrow-linear-lanceolate with a straight, slightly compressed beak ; valves 

 witii a distinct midrib and more or less obvious, often forking, lateral nerves. 

 — Sinapis abyssinica, A. Br., and Melanosinapis abyssinica, in Herb. Hort. 

 Petrop. Brassica carinata, A. Br., Rich. Fl. Abyss, i. 22. For extended 

 synonymy, see Hook. f. et Thorns, in Journ. Linn. Soc. v. 170. 



Nile Land. Abyssinia, cultivated, Schimper ! 

 liower Guinea. Angola, Golungo Alto, Br. Welwiisch ! 

 Mozamb. Distr. Near Murchison falls, on the Shire, Vr. Meller ! 

 Extends from S. Europe to China. It is cultivated in the tropics for its oil. It is aUo 

 used by the natives as a salad. 



*2. B. (Sinapis) nigra (Linn.), DC. Syst. Veg ii. 608. A branched 



VOL. I. D 



