210 



BRITISH FLORA 



Fumaria Bor<ei, Jord. Robust. Flowers large, 

 purple or pink. Fruit broader than long, blunt, 

 wrinkled, with very narrow neck. May -Sep- 

 tember. Herbaceous annual. 



Fumaria Bastardi, Bor. ( = F. confusa, Jord.). 

 Climbing. Flowers large, whitish or pink, 

 inner petals tipped with dark-purple. Sepals not 

 half as long as corolla, often persisting. Fruit 

 rounded above the very broad neck, wrinkled 

 vertically. Apical pits broad and shallow. April- 

 September. Herbaceous annual. 



Fumaria detisiflora, DC. ( = F. micrantlia, 

 Lag.). Spreading. Leaf-segments narrow, flat 

 or slightly channelled. Flowers pale -purple. 

 Lower petal spoon-shaped. Sepals broader than 

 corolla tube, toothed. Fruit-stalks erect to spread- 

 ing. Fruit rounded or longer than broad, wrinkled 

 when dry, with two shallow apical pits. 6 in.- 2 ft. 

 June-September. Herbaceous annual. 



Fumaria Vaillantii, Lois. Greyish -green. 

 Leaf-segments flat, spreading, narrow. Sepals 

 very small, triangular. Flowers purplish, then 

 white. Fruit obovate, pc!nted, shorter than fruit- 

 stalk. April - September. Herbaceous annual. 

 Rare. 



ORDER CRUCIFER^: 



Alyssum incanum, L. Erect or ascending. 

 Stem hoary. Leaves lanceolate. Flowers white. 

 Calyx falls. Petals 2-fid, nearly to base. Pods 

 elliptic, many-seeded. 6-15 in. June-September. 

 Herbaceous annual or biennial. 



Flixweed (Sisymbrium Sophia, L.). Erect. 

 Stem branched above. Leaves 2-3-pinnatifid ; 

 segments linear- lanceolate. Flowers pale-yellow 

 on slender stalks; petals short. Pods linear, 

 round in section, three times as long as stalks, 

 erect to spreading. Style very short. Seeds 

 oblong. 1-2 ft. June-August. Herbaceous 

 annual. 



Sisymbrium pannonicum, L. (= 5. altissimum, L. 

 = 5. Sinapistrum, Crantz). Erect. Lower leaves 

 runcinate - pinnatifid, auricled below. Flowers 

 yellow. Sepals spreading. Pods spreading. 1-2 ft. 

 June-August. Herbaceous annual. 



London Rocket (Sisymbrium Irio, L.). Erect. 

 Stem branched, smooth. Lower leaves runcinate- 

 pinnatifid; lobes toothed oblong, terminal, angu- 

 lar. Upper lanceolate with hastate terminal lobe. 

 Flowers yellow. Flower-stalks slender. Pods 

 round in section, erect, four times as long as the 

 stalks. Seeds oblong. 1-2 ft. June-August. 

 Herbaceous annual. 



Treacle Mustard (Erysimum cheiranthoides, L.). 

 Erect. Stem rigid. Leaves lanceolate, narrowed 

 at base, entire, slightly toothed, with 3-partite 

 stellate hairs. Flowers yellow. Flower- stalks 

 exceeding calyx, much shorter than pods. Pods 

 more or less erect. Seeds many, small. 6 in. -2 ft. 

 June-August. Herbaceous annual. 



Erysimum repandum, L. Spreading. Leaves 

 lanceolate, repand-toothed. Hairs simple. Flowers 

 pale -yellow. Pods square, blunt, spreading. 

 6 in. -i ft. June-August. Herbaceous peren- 

 nial. 



Hare's Ear Treacle Mustard (Con ring in orien- 

 talis, L. = Erysimum perfoliatum, Crantz). Erect. 

 Stem simple, round in section. Radical -leaves 

 obovate, blunt, entire, smooth, glaucous. Cau- 

 line ovate -cordate, blunt, clasping. Flowers 

 cream-coloured. 1-2 ft. June-September. Her- 

 baceous annual. 



Wild Turnip (Brassica Rapa, L.). Radical- 

 leaves more or less hairy, not glaucous. Cauline 

 smooth, bluish-white. Flowers bright-yellow. 

 1-3 ft. May-July. Herbaceous biennial. 



Swede (Brassica Rutabaga, DC.). Radical- 

 leaves glaucous. Root tuberous, with elongated 

 neck. Flowers pale-buff. 1-3 ft. March-Sep- 

 tember. Herbaceous biennial. 



Rape (Brassica Napus, L.). Leaves bluish- 

 white. Root slender, spindle-shaped. Flowers 

 yellow. 1-3 ft. June -August. Herbaceous 

 biennial. 



Black Mustard (Brassica nigra, Koch = B. 

 sinapioides, Roth). Erect. Lower leaves large, 

 lyrate, rough ; terminal lobe large-lobed. Upper 

 linear-lanceolate, entire, smooth. Pods appressed, 

 square, smooth, beak awl-shaped, short, sterile; 

 valves i-veined. 1-4 ft. June-August. Her- 

 baceous annual. 



White Mustard (Brassica alba Boiss. = Sinapis 

 alba, L.). Chief differences from last: Stem 

 rough, with turned-back hairs. Pods spreading, 

 cylindrical, knotty, roughly hairy. Valves 5- 

 veined, not as long as sword-shaped beak, which 

 is sometimes i-seeded. 1-3 ft. June-August. 

 Herbaceous annual. 



Brassica Pollichii, Druce. Leaves deeply pin- 

 natifid. Flowers whitish-yellow, with bracts at 

 base of raceme. Pods spreading, linear, i-nerved. 

 1-2 ft. June-August. Herbaceous annual. 



Hairy Cress (Lepidium Draba, L.). Erect. 

 Stem branched. Leaves oblong, clasping, toothed, 

 lower stalked. Flowers numerous, small, white, 

 on long stalks in corymbs. Style as long as dis- 

 sepiment. Pod heart-shaped. 1-2 ft. May. 

 Hc-rbaceous perennial. 



Garden Cress (Lepidium safivum, L.). Erect. 

 Lower leaves i-2-pinnatifid; upper linear, entire, 

 sessile. Flowers white. Pouch round-oval, blunt. 

 6-18 in. June- August. Herbaceous annual. 



Smith's Cress (Lepidium Smithii, Hook. = L. 

 heterophyllum, Benth.). Stems several, branched 

 below, central one erect, rest spreading. Leaves 

 hairy, toothed ; lower obcordate, stalked ; upper 

 lanceolate, clasping. Flowers white. Anthers 

 violet. Pods ovate, notched. Style twice as long 

 as notch. 6-12 in. June-August. Herbaceous 

 perennial. 



ORDER VIOLACE.S 



Heart's Ease (Viola tricolor, L.). Differences 

 from V. arvensis, L. : No rootstock. Leaves 

 oblong, scalloped. Flowers purple and yellow. 

 Petals longer than sepals. 4-12 in. April-Sep- 

 tember. Herbaceous annual. 



ORDER CARYOPHYLLACEJE 



Soapwort(5nr/>fln'rm Vaccaria, L.). Glaucous. 

 Erect. Stem much branched above. Leaves 



