402 l86. UMBELLIFERAE 



Fruit with a membranous or leathery rind, rarely (tribe Coriandreae) with 

 a woody one, but then oil-channels situated on the inner surface of the 

 mericarps and seeds deeply grooved on this side. Flowers usually in 

 compound umbels 6 



2. Fruit much compressed laterall}^ with a very narrow commissure and a 



much projecting dorsal angle. Oil-channels very narrow or wanting. 

 Calyx-limb indistinct or shortly toothed. Petals with a straight point. 



ITribe HYDROCOTYLEAE.] " . 3 



P'ruit compressed from front to back, with a broad commissure. [Tribe 

 MULiNEAE.] 4 



3. Mericarps with 5 ribs, the marginal ones contiguous. Flowers herma- 



phrodite. Petals valvate in bud. Leaves roundish, stipulate. — 



Species 15. Some are used medicinally Hydrocotyle L. 



Mericarps with 7 — c) ribs connected by a network of veins, the marginal 

 ribs divergent. Flowers polygamous. Petals imbricate in bud. Leaves 

 exstipulate. — Species 20. Southern and tropical Atrica. Some are 

 used medicinally. (Under Hydrocoivle L.) .... Centella L. 



4. Fruit slightly compressed, not winged, with faint ribs. Oil-channels 



more or less obvious. Calyx-teeth narrow. Petals elliptical or lanceol- 

 ate, with a straight point. Herbs forming cushion-shaped tufts. Leaves 

 3-cleft or 3-parted, alternate. Flowers in terminal simple umbels. — 

 Species 1. Island of Kerguelen Azorella Lam. 



Fruit much compressed, winged. Oil-channels obscure or absent. Caly.x- 



teeth large or wanting. Leaves undivided or lobed 5 



5- Wings of the fruit arising from the marginal ribs and covered with barbed 

 prickles. Seeds not furrowed. Flowers hermaphrodite. Calyx-lobes 

 wanting. Petals elliptical, with a straight point. Flowers in simple 

 umbels arising at the forks of the stem. Leaves usually opposite, 

 clothed with barbed bristles. — Species i. Canary Islands. (Under 

 Bouiesia Ruiz et Pav.) Drusa DC. 



Wings of the fruit arising from the intermedial ribs. Fruit netted or 

 wrinkled on the back. Seeds angular-furrowed. Flowers polygamous. 

 Calyx-lobes broad-lanceolate, petal-like in the male flowers. Petals 

 awl-shaped, with the point bent inwards. Flowers in compound umbels. 

 Leaves alternate, tomentose beneath. — vSpecies 5. South Africa 



{Cape Colony) Hermas L 



6. (i.) Styles 2, surrounded by a ring-shaped disc, filiform and rather long, 

 rarely a single style. Fruit covered with scales, prickles, or tubercles. 

 Carpophore adnate or wanting. Oil-channels under the primary ribs, 

 scattered, or wanting (none in the furrows). Calyx-lobes large. Petals 

 with the point bent inwards. Flowers in umbels heads or spikes, w^hich 

 are simple or arranged in heads or cymes. [Subfamily SANICULOID- 

 EAE.] 7 



Styles 2, arising from the top of a more or less elevated disc (stylopod). 

 Carpophore usually free. Oil-channels in general only in the furrows 



