UMBELLAT.E. 



145 



279. PTYCHOTIS. 



1. heterophylla. Root-L. pinnate. Lts. 

 roundish, inciso-serrate. Stcm-L. multifid. 

 Segments lineari-filifonn. All tlie partial 

 bracts setaceous, b. 7, 8. Stony, s. France. 

 Savoy. Piedmont. 



2. verticillata. All the L. multifid. Seg- 

 ments of root-L. lineari-cuneate, 2-3-clelt; 

 of others capUlary. Tw'o of the partial bracts 

 spatulate, cuspidate, p. 7. Grassi/. Italy. 

 Istria. 



280. FALCARIA. 



1. Rivini. Root-L. simple or ternate. 

 Stem-L. ternate ; the middle Lt. trifid, divided 

 on one side to midrib. Segments linear. 

 Serratnres equal, regular, b. 7, 8. Fields. 

 m. and s. Eur. 



2. latifolia. L. ternate. Middle Lt. tri- 

 fid. Segments of lower L. ovate, cuneate at 

 base, deeply and unequally serrate, b. 6, 7. 

 Calc. hills. On the mountain Zhaun, Carniola. 



281. HELOSCIADIUM. 



1. stoloniferum. " Stem striate, erect, 

 soKd, flexuose, stonoliferous at base. L. pin- 

 nate. Lts. 7-11, ovate- or oblongo-lanceolate, 

 regularly acimiinato-serrate ; terminal obovate, 

 cuneate at base (rarely cordato-ovate), some- 

 what 3-lobed. Umbels axillary, stalked. Invo- 

 lucre of 1 entire and often deciduous L. p. 

 4-7. Movyiitain rills. Madonie, Sicily." — 

 Guss. Not in Bertoloni. 



2. nodiflorum. Stem procumbent. L. 

 pinnate. Lts. ovate, equally and obtusely ser- 

 rate. Umbels sessile, or on short stallcs oppo- 

 site to L. Involucre of a single L., often want- 

 ing, p. 7, 8. Water. 



3. repens. Plant with creeping nraners, 

 but no proper stem. L. pinnate. Lts. roundish, 

 unequally and acutely inciso-serrate. Umbels 

 opposite to L. Stalk longer than umbel. Invo- 

 lucre persistent, of 2 or 3 L. p. 8. Hoist peaty. 

 Ft. Valley of Rhine, occ. 



4. intei'iuediuiu. L.' pinnate. Lts. some- 

 what verticillate, trifid. Root somewhat bulb- 

 ous. Umbels stalked, 4-5 -rayed, opposite L. 

 Involucre of about 5 L. p. 8. Still water. 

 Dax. 



5. crassipes. L. pinnate ; uppermost ter- 

 nate. Lts. obovate, trifid, and entire; those 

 of the immersed L. divided into capillary seg- 

 ments. Rays 3-5, rigid, thick at . the base. 



somewhat connate ! Involucre 0. Partial Stalks 

 3 or 4 times as long as fnat. p. 4. Marshes. 

 Corsica. Sard. 



6. inundatum. L. pinnate, incise. Sub- 

 mersed L. multifid with capillary segments. 

 Umbel of 2 rays, each al)out 5 -flowered. Par- 

 tial Stalks much shorter than fruit, p. 5. Still 

 water. Eug. Er. n. Ger. Tusc. Sic. 



282. SIUM. 



A. Vittce superficial ; the lateral ones mar- 



ginal. 



1. latifoliuxn. Root fibrous, stolonifcrous. 

 Stem deeply fmTowed. L. piunate. Lts. ob- 

 longo- or ovato-lanceolate, equally serrate. 

 Subaqueous L. often bipinnatifid. Involucels 

 of many L. Carpophoi'e attached to seeds. 

 A tall and slender plant, p. 7, 8. Ditches 

 and pools. 



2. longifolium. " Stem striate. L. pin- 

 nate. Lts. lineari-lanceolate, long, unequally 

 dentate, very acute. Involucre usually of one 

 L. Er. seen on the sides oval, and not round 

 as in S. latifolium. p. Ditches and marshes 

 at Cechia (Bohemia)." — DC. Not noticed by 

 Koch, nor by Bluff and Fingerhuth. 



B. Vittce covered by a thick bark ; the lateral 



ones not forming the margin. 



3. angustifoliuKQ. Seed quite cii-cular 

 on section. L. pinnate. Lts. unequally lobed 

 and serrate. Involucre of many incise L. 

 Plant bushy, p. 7, 8. Still water. 



283. AMMI. 



1. majus. L. pinnate, with a shai-ply 

 serrate, cartilaginous margin. Stalks cuneate. 

 Lts. of lower L. obovato-lanceolate ; of upper 

 multifid, linear, a. b. 5-7. Fields, m. and 

 s. Europe. 



2. ^laucifolium. Nearly all the L. bipin- 

 nate. Stalks linear. Lts. of lower L. lanceo- 

 late ; of upper multifid, very narrow, a. b. 

 5-7. Fields. It. Bert, unites this to ma- 

 jus, but the more divided L. give it a different 

 habit. 



3. intermedium. " All L. decomposito- 

 multipartite; Segments incise or toothed ; the 

 lower wedge-shaped ; upper lineari-subulate, 

 serrate, very acimiinate. Toulouse. Reggio. 

 Litermediate between glaucifoUum and Vis- 



nao'a.' 



-DC. 



4. Visnaga. All L. tripinnate. Segments 

 lineari-fiiiform, cuspidate, divaricate. Primary 



