CRUCIFER^; 37 



S. Irio L. London Rocket. Leaves runcinate toothed or pinnatifid, glabrous. 

 Radical leaves petioled ; terminal lobe often hastate. Flowers very small, ^ in. 

 in diameter. Pods terete, slender, erect, glabrous, very numerous. Annual or 

 biennial, 1-2 ft. high. 



Waste places and borders of fields. March-June. 



** Flowers white. 



S. Thalianum Gay = Arabis Thaliana L. Thale-cress. Leaves lanceo- 

 late, toothed, pubescent, lower leaves petioled. Stem leaves narrow, sessile. 

 Stem 6-12 in. high, slender, branched, glabrous. Flowers very small, \ in. 

 diameter on slender pedicels. 



Fields and waste places. March-May. 



S. Alliaria Scop. = \lliariaofticina\isAndrz. Jack-by-the-hedge, Garlic- 

 mustard. Leaves all petioled, usually glabrous, deltoid or reniform-cordate, 

 coarsely toothed or crenate, often 3 in. across. Flowers pure white, J in. 

 diameter. Pods 2^ in. linear, rigid. Plant 2-3 ft. high, usually annual. 



Hedges, banks, and shady places in woods. April-June. Commoner in the 

 hill region of both Departments than in the plain. 



ERYSIMUM L. 



E. orientate R. Br. = E. perfoliatum Crantz. Hare's-ear. Leaves 

 oblong, entire, glabrous and glaucous, auricled. Flowers white or pale yellowish- 

 white. Siliqua spreading, valves i-nerved, glabrous like the whole plant. 



Fields and waste places, uncommon. May-June. 



E. australe Gay. Stem angular, erect, 6-18 in. high. Leaves linear or 

 linear-lanceolate, entire or slightly toothed. Calyx twice the length of the 

 peduncles, which are spreading. Flowers large, pale yellow. Pedicels and sili- 

 qua somewhat whitish. Seeds winged at top. 



Stony places in the hills and lower mountains. May, June. Above Menton, 

 Nice, Grasse, etc., Le Luc, Mont Faron, Ampus, etc. 



HESPERIS L. 



H. laciniata All. Stem erect, branched, 1-2 ft. high. Lower leaves ob- 

 long-lanceolate, petiolate, pinnate at the base ; upper ones sessile, ovate or lanceo- 

 late toothed. Flowers greenish-yellow, shaded with red, in long racemes. Calyx 

 twice length of pedicels. Siliqua pubescent. Whole plant somewhat viscous, and 

 upper part glandular. 



Steep rocks. May, June. Mont Mulac6 above Menton, Gourdon, Sospello, 

 La Giandola, etc. In the Var, the variety, purpurascens Jord., grows near 

 Bormes, Lavandou, Ollioules, etc. 



MALCOMIA R. Br. 



M. parviflora DC. Stem-leaves linear, entire, or covered with a greenish 

 down ; lower leaves oblong, obtuse, usually sinuate-toothed. Flowers very small, 

 pale mauve. Plant about 6 in. high. 



Maritime sands. April, May. Commoner in the Var than in Alpes-Marit. 

 (Golfe Jouan, Cannes). 



BRASSICA L. 



B. Robertiana Gay. Wild Cabbage. A stout glabrous or glaucous plant 

 sometimes a yard high, almost woody at the base. Leaves large, fleshy, the 

 lower ones lyrate, the upper ones lanceolate sessile, not auricled. Sepals erect. 

 Stamens almost equal. Flowers large, pale yellow. Allied to B. oleracea. 



Limestone rocks and cliffs on the littoral. Rare. April-June. Mt. Faron, 

 Coudon, Gorges d'Ollioules, Monaco, Villefranche, etc. 



B. Napus L. Cole-seed. An annual or biennial attaining 3 ft. in height, 

 herbaceous, glabrous and glaucous. Lower leaves lyrate, pinnatipartite, upper 

 ones embracing the stem and auricled. Sepals spreading. Siliqua spreading. 

 Flowers yellow. Subspontaneous in cultivated places. March-May. 



