6 
NYMPHJEACEJB. 
Seeds with a double albumen. — Aquatic herbs, with a perennial rhizome, 
long-petioled usually round and floating leaves and showy flowers. 
Distrib. Cosmopolitan. Species 30-40. 
1. NYMPHJEA, Linn. 
Sepals 4. Petals many, multiserial, adnate to the torus, like the 
stamens, into which they gradually pass. Anther-cells long ; filaments 
petaloid. Carpels sunk in the fleshy disk, so as to form a globose many- 
celled pistil, crowned by the radiant stigmas. Fruit spongy. Seeds 
immersed in pulp, enclosed in a fleshy arillus. — Flowers white, or 
coloured, often odorous. Distrib. Cosmopolitan. Species 20. 
1. N. stellata, Willd. ; var. madagascariensis, Ayres. Leaves 
round, 3-4 in. broad, irregularly crenate, lobed at the base nearly to the 
petiole. Sepals 1^-2 in. long. Petals 6-8, lanceolate, white tinged with 
blue. Anthers in. long ; connective produced beyond the cells in 
a linear process. Stigmatic rays 8-10, short, clavate. N. madagas- 
cariensis, DC. Prod. i. 114. 
Mauritius, in streams and lakes. The species spread through the tropics of old 
world ; very variable. Nenuphar etoiU. 
Order YI. CRUCIFERJE. 
Sepals 4, free. Petals 4, obtuse, clawed, cruciate, rarely G. Stamens 6, 
hypogynous ; 2 outer shorter. Ovary 2-celled ; style short or 0 ; ovules 
1 or many in each cell on parietal placentas. Fruit a long or short pod, 
with two valves usually separating from a central framework (replum). 
Seeds exalbuminous, with radicle enclosed by the cotyledons or recurved 
so as to press against their back (incumbent) or edges (accumbent). 
— Annual or perennial herbs with racemed usually ebracteate flowers, 
and radical leaves often in a dense rosette. Distrib. Temperate 
regions, chiefly of northern hemisphere ; species 1200. 
Pods long (Siliquosse). 
Flowers white ; radicle accumbent ; cotyledons flat. 
Pod compressed ; seeds 'uniserial 1. Cardamine. 
Pod terete ; seeds biserial 2. Nasturtium. 
Flowers yellow ; radicle incumbent ; cotyledons conduplicate *Brassica. 
Pods round or oblong (Siliculosae). 
Valves of pod smooth, dehiscent 3. Lepidium. 
Valves of pod rugose, not dehiscing * Senebiera. 
1. CARDAMINE, Linn. 
Sepals not saccate at the base. Petals clawed, longer than the calyx. 
Pod linear, compressed, narrowed to both ends, the valves not keeled. 
Seeds uniserial, oblong, compressed, wingless ; radicle accumbent. — 
Annual or perennial herbs ; leaves mostly pinnate ; flowers small, 
