8 
crucifers. 
[ Nasturtium . 
entire upper leaves and slender torulose pod, with a flattened beak and 
3 ribs on each valve, is in Dr. Balfour’s Rodriguez collection. 
* B. nigra, Koch, (S inapis, Linn.) and B. alba, Hk. fil. and Thoms. ( Sinapis , 
Linn.) the commonly cultivated black and white mustard, are both grown in 
Mauritius, and casually subspontaneous. 
3. LEPIDIUM, Linn. 
Sepals oblong, convex. Petals minute, sometimes absent. Stamens 
2-6. Pod round or oblong, compressed laterally, with a narrow replum, 
often deeply emarginate. Seeds 1 to a cell, pendulous ; radicle usually 
incumbent. — Annuals or perennials, with minute white flowers in long 
7’acemes. DrsTRiB. Cosmopolitan. Species 60-80. 
1. L. ruderale, Linn.; DC. Prod. i. 205. An erect, glabrous, much- 
branched annual weed. Radical leaves divided; upper linear, entire. 
Racemes finally 3-4 in. long. Flowers minute, usually apetalous and 
diandrous. Pod oblong, ^ inch long, scarcely emarginate. L. iberoides, 
Desv.; DC. Prod. i. 206. 
Mauritius, in waste ground. Cosmopolitan weed, originating from old World. 
# Senebiera didyma , Pers. (S. pinnatifida, DC.), a cosmopolitan weed, 
occurs in cultivated ground in Mauritius. It is a diffuse procum- 
bent annual, with leaves cut down to a winged rachis into entire 
or trifid pinnae, copious sessile axillary racemes, minute flowers mostly 
apetalous and diandrous, and a minute pod laterally compressed with 
2 globose 1-seeded indehiscent valves. 
Order VII. CAPPARIDACEJE. 
Sepals 4, free or connate. Petals 4, obtuse, clawed. Stamens nume- 
rous or indefinite, hypogynous ; filaments sometimes adhering to a 
gynophore. Ovary 1-celled, sessile or stalked ; style short or 0 ; 
stigma capitate ; ovules many, on 2-4 parietal placentas. Fruit in the 
Mauritian genera a cylindrical or compressed capsule, the two dry valves 
separating from a framework as in Cruciferce. Seeds uniform, exal- 
buminous. — Herbs or shrubs ; leaves simple or digitate, leaflets entire ; 
flowers racemose or axillary, often showy. Distrib. Species 300, 
nearly all tropical in both hemispheres. 
Capsule long-stalked ; filaments few, united in a tube . . 1. G-ynandropsis. 
Capsule sessile ; filaments many, free 2. Polanisia. 
1. GYNANDROPSIS, DC. 
Sepals 4, free, lanceolate. Petals 4, with very long claws. Stamens 
4-6, the bases of the filaments forming a tube round the lower part of a 
