228 88. CRUCIFERAE — 89. RESEDACEAE 



T06. Stamens more or less perigynous. Petals white. Seeds 4 — 6. Cotyledons 



inserted behind the bend of the embryo 107 



Stamens hypog\Tious. Cotyledons inserted at the bend of the embryo. 108 

 T07. Filaments with an appendage at their base. Fruit winged above. Style 

 short. Seeds 4. Radicle accumbent. Leaves lanceolate, ovate, or 

 pinnatipartite. — Species 2. North-west Africa. Used as vegetables. 



Teesdalia R. Br. 



Filaments without an appendage. Fruit not winged. Style absent. 



Seeds 6. Radicle incumbent. Leaves linear. — Species i. High 



mountains of East Africa Subularia L. 



108. Filaments, at least the longer ones, with a tooth-like appendage. Lateral 



sepals saccate at the base. Petals rose-coloured. Style short. Radicle 



incumbent. Flowers in racemes. (See 90.). . . Aethionema R. Br. 



Filaments without an appendage. Sepals not saccate 109 



109. Flowers solitary in the axils of the radical, undivided leaves. Petals 



rose-coloured. Fruit-valves wingless, separating from the laterally 

 dilated placentas. Seeds 6. Radicle incumbent. — Species 2. North- 

 west Africa. Used as ornamental plants. . . lonopsidium Reichb. 

 Flowers in racemes. Fruit-valves separating from the narrow or thickened 



but not dilated placentas, or fruit indehiscent no 



no. Fruit-valves not winged. Fruit oblong or ovate. Petals white. Leaves 



pinnately divided. (See 27.) Hutchinsia R. Br. 



Fruit-valves winged m 



III. Radicle accumbent. Petals white or rose. Leaves undivided. — Species 

 6. North Africa and Abyssinia. Used medicinally. "Penny-cress." 



Thlaspi L. 



Radicle incumbent 112 



T12. Fruit oblong or elhptical. Stigma sessile. Petals white or yellow. 

 Leaves undivided. — Species 2. North-west Africa (Algeria). (In- 

 cluding Pastorea Tod.) Bivonaea DC. 



Fruit obcordate. Stigma borne upon a short style. Fimicle free. Petals 

 white. (See 36.) Capsella DC. 



SUBORDER RESEDINEAE 



FAMILY 89. RESEDACEAE 



Leaves alternate, stipulate. Flowers in terminal spikes or racemes, irregular. 

 Sepals 4 — 8. Petals 2 — 8, free, rarely o. Disc hypogynous, one-sided, rarely 

 wanting. Stamens 3 — 40, free or united at the base. Carpels 2 — 6, superior 

 and usually stalked, open at the top, distinct or united and then forming a i- 

 celled ovary. Ovules inverted. Stigmas sessile. Seeds reniform, exalbumin- 

 ous, with a curved embryo. — Genera 6, species 45. (Plate 55.) 

 I. Carpels 5 — 6, distinct or cohering at the base only. Petals 5. Leaves 

 lanceolate, entire 2 



