HYDROCOTYLE.] UMBELLIFER^E. 165 



** Lateral wings of opposite carpels with a space between them. 



Bracts deciduous. Fruit large 30. Angelica. 



Bracts 0. Fruit small 29. Selinum. 



1. HYDROCOT'YIjE, L. WHITE-ROT, PENNY- WORT. 



Small perennial herbs, often creeping. Leaves entire, lobed, or 3-5- 

 foliolate. Umbels usually simple ; bracts few or 0. Calyx-teeth 5 or obso- 

 lete. Petals not inflexed, valvate or imbricate in bud. Fruit much later- 

 ally compressed ; commissure narrow, carpophore undivided 2-fid or \ 

 carpels nearly orbicular, with 1-5 ridges on each side ; vittse or slender ; 

 styles filiform, on the flattened disk. DISTRIB. Tom p. and trop. ; species 

 70. ETYM. vSwp and KorvKi], from the cupped peltate leaf. 



H n vulga'ris, L. ; leaves orbicular peltate crenate, petiole hairy. 

 Marshes, bogs, &c., from Shetland southd. ; ascends to 1,000 ft. in the Lake 

 district; Ireland; Channel Islands; fl. May-Aug. Stem filiform, white, 

 creeping, rarely floating. Leaves |-2 in. diam., 1 or more at the nodes ; 

 petiole 2-6 in. Umbels axillary, shortly peduncled. Flowers small, capitate, 

 pinkish-green; bracts minute, triangular, concave. Fruit ^ in. diam.; 

 carpels covered with resinous points, with 2 ridges on each face. DISTUID. 

 Europe, "W". Asia, N. Africa. 



2. ERYN'GIUM, L. ERYNGO. 



Rigid, branched, often glaucous, perennial herbs. Leaves spinous-toothed, 

 lobed or cut. Flowers sessile, in very dense bracteolat-e -heads, surrounded 

 at the base by a whorl of rigid bracts. Calyx-tube scaly ; teeth rigid, 

 acute, longer than the petals. Petals narrow, deeply notched, point long 

 inflexed. Disk concave, crenulate. Fruit ovoid ; commissure broad, 

 carpophore ; carpels J-terete, primary ridges obscure 1-vittate ; styles 

 filiform, slender, erect. Seeds flat or subconcave ventrally. DISTRIB. 

 Temp, and sub-trop. regions, chiefly S. American ; species 100. ETYM. 

 uncertain. Very slender vittae often occur in the endocarp. 



E. marit'imum, L. ; very glaucous, radical leaves suborbioular 



3-lobed spinous, caulirie palmate. Sea Holly. 



Sandy shores, from Aberdeen and Argyll southd. ; Ireland ; Channel Islands ; 

 fl. July-Aug. Ro'itstock creeping, stolouiferous. Stems 1-2 ft., stout, 3- 

 chotomously branched. Radical leaves 2-5 in. diam., margins cartilaginous. 

 Heads about 3 together, -! in. diam., at length ovoid. Primary involucre 

 of 3 bracts ; partial of 5-7 ovate spinous-serrate bracts ; bracteoles 3-fid, 

 equalling the flowers. Flcwers in. diam., bluish-white. DISTRIB. Shorts 

 of Atlantic, Mediterranean and Black Seas. Roots formerly candied as a 

 sweetmeat. 



E. CAMPES'TRE, L. ; pale green, radical leaves pinnately 3-5-foliolate, 

 cauline 2-pinnatifld. 

 Reported wild in Kent, and formerly in Suffolk ; supposed to be introduced 



at Plymouth, Weston-super-Mare, the Tyne, Waterford, &c. ; Channel 



