156 miBELLIFERJE. 



Sandy and rocky banks, &c., very rare ; Torquay ; E. Sussex ; Channel 

 Islands, common ; fl. July. Stem 2-8 in., rigid, simple or forked ; branches 

 stout, divaricate, ribbed. Leaves ^-1 in., lowest sometimes petioled. 

 Bracts 3-5, concealing the umbels, rigid ; nerves strongly reticulate ; 

 margins scarious. Fruit minute, oblong ; ridges slender, smooth ; vittaj 

 solitary. DISTRIB. Europe from France southwards. 



8. TRIN'IA, Hoffmann. HOXEWORT. 



Glabrous, branched herbs. Leaves pinuately compound. Umbels com- 

 pound, few-rayed ; bracts and bracteoles 1, 2, or ; flowers white, usually 

 dioecious, males with narrower petals. Calyx-teeth or small. Petals 

 acute or with an iuflexed point. Disk-lobes conical or depressed ; margins 

 undulate. Fruit broadly ovoid, laterally compressed or didymous ; com- 

 missure narrow, carpophore 2-partite ; carpels subterete or 5-angled, 

 primary ridges subequal, thick, smooth, rugose or plaited, witli a large 

 vitta inside each. Seed terete. DISTRIB. S. Europe and temp. Asia ; 

 species 8. ETYM. Dr. Trinius, a Russian botanist. 



1. T. vulga'ris, DC. ; glabrous, bracts or solitary, ridges smooth. 

 Limestone rocks, rare ; S. Devon, N. Somerset, St. Vincent's Rocks, 

 Bristol ; fl. May-June. Glaucous. Root fusiform, biennial, fibrous at the 

 top. Stem 3-6 in., branched from the base, solid, stout, deeply grooved : 

 branches divaricate. Leaves spreading, petioles and linear segments very 

 slender. Male umbels depressed ; female irregular, rays longer ; bract 

 3-cleft or ; bracteoles 2-3, linear. Flowers minute. Fruit fa in., ovoid ; 

 styles slender ; segments of carpophore flattened. DiSTRLB. Europe from 

 Belgium southwards to Greece. 



9. A'PIUM, L. (and Helosciadium, Koch). CELERY. 

 Annual or perennial, glabrous herbs. Leaves pinnate or 3-nately com- 

 pound. Umbels compound, often leaf-opposed, or in the forks ; bracts few 

 or ; bracteoles many or ; flowers white. Calyx-teeth 0. Petals entire. 

 acute, or with a short incurved point. Disk-lobes depressed or conical, 

 margins entire. Fruit broadly ovoid, laterally compressed ; commissure 

 constricted, carpophore simple ; carpels 5-angled, primary ridges equal 

 prominent obtuse ; vittaj solitary in the interstices. Seed subterete. 

 DISTIIIB. Temp, andsubtrop.; species 14. ETYM. obscure. 



SECTION 1. A'pium proper. Bracteoles 0. Petals much incurved. 



1. A. crave olens, L. ; leaves pinnate or 3-foliolate. Wild Celery. 

 Marshy places by the sea, common in England and Ireland, Cantire in Scot- 

 land ; fl. June- Aug. Rank-scented. Root fusiform, biennial. Sttm 2 ft., 

 erect, stout, grooved. Leaves 6-18 in.; leaflets -lin., cuneato obovate 

 or rhomboid, lower petioled, cut or lobed. Umbels shortly peduncled or 

 sessile. Flowers', greenish- white. Fruit ?* in., roundish; ribs prominent ; 

 vittae solitary ; styles short, recurved, divergent. DISTRIB. Europe. N. 

 Africa, W. Asia to N.W. India. 



SECTION 2. Helosciadium, Koch (gen.). Bracteoles many. Petals 

 nearly straight. Aquatic or subaquatic. 



2. A. nodiflorum, Reich.; prostrate or creeping, leaves pinnate or 

 3-foliolate, leaflets slightly lobed serrate. 



