308 



UMBELLIFER^E. LXIX. SORANTHUS. LXX. SESELI. 



tite. An erect herb, with a habit between Seseli and CEnanlhe, 

 but differs from the first in the teeth of the calyx being obso- 

 lete, in the petals being broad-ovate, not obovate, and in the 

 ribs of the fruit being less prominent ; and from the last in the 

 shape of the petals, in the styles and in the carpophore being 

 present. 



1 S. MEYE'RI (Led. 1. c.). I/ H. Native of Siberia, at the 

 river Irtysch, not far from the lake called Noor-Saisan ; and at 

 the river Bekin, in sandy places. Root fusiform. Stem erect, 

 striated, simple at the base, and usually bearing 3-4 verticillate 

 branches at the apex ; branches leafless, or furnished with mem- 

 branous scales in the middle. Radical leaves 3-4, tripinnate : 

 leaflets linear; cauline leaves 1-2. Umbels of 10-15 rays, of 

 these 4 are longer than the rest. Involucra wanting, rarely 

 of 1 leaf; involucels of C-8 leaves, which are ovate-lanceolate, 

 pilose on the outside, and ciliated, shorter than the umbellules. 

 Flowers sessile in the umbellules : outer ones female : interme- 

 diate ones hermaphrodite : central ones male. 



Meyer's Soranthus. PI. \\ to 3 feet. 



Cult. This plant will grow in any soil, and is easily increased 

 by seed. 



LXX. SE'SELI (Scycelyous is the Arabic name of an umbel- 

 liferous plant, but to what plant it was given is now unknown). 

 Lin. gen. no. 360. Lag. am. nat. 2. p. 103. D. C. coll. mem. 

 5. p. 46. t. 3. f. R. prod. 4. p. 144. Seseli and Bubon species, 

 Spreng. Seseli species, Koch. 



LIN. SYST. Pentandria, Digynia. Margin of calyx 5-toothed ; 

 teeth short, thickish, and sometimes obliterated. Petals ob- 

 ovate, coarctate into an inflexed point at the apex, emarginate or 

 nearly entire. Fruit oval or oblong (f. 55. D. a. E. a.), with 

 the transverse section nearly terete, and crowned by the styles, 

 which are reflexed (f. 55. D.b.E.b.); mericarps with 5 pro- 

 minent filiform or elevated thick corky ribs ; lateral ribs mar- 

 ginating, and a little broader than the rest ; vittse one in each 

 furrow, but there are sometimes 2 in the outer furrows, and always 

 2 in the commissure, but very rarely 4. Seed somewhat semi-te- 

 rete.- Usually glaucous biennial or perennial herbs. Leaves pin- 

 nate or ternately decompound. Involucrum wanting or almost so ; 

 involucels of many leaves. Flowers white, very rarely yellow. 



SECT. I. HIPPOMA'RATHRUM (from ITTTTOJ, hippos, a horse, and 

 fiapaOpov, maratliron, fennel ; horse fennel). Rivin, Roehl, but 

 not of Link, D. C. prod. 4. p. 144. Involucra wanting. Leaves 

 of involucels joined together nearly to the apex into abowl-shaped 

 cup, having a toothed margin. 



1 S. HIPPOMA'RATHRUM (Lin. spec. 373.) stem terete, usually 

 branched at the apex, and nearly naked ; leaves glaucous, bi- 

 pinnate ; leaflets linear, trifid, acutish ; petioles dilated and 

 sheathing ; fruit smoothish ; involucel cup-shaped. I/ . H. Na- 

 tive of Alsatia, Piedmont, and Germany, on chalky hills and 

 rocks. Jacq. fl. austr. 2. t. 143. Slum Hippomarathrum, 

 Roth, fl. germ. 1. p. 128. Seseli articulatum, Crantz, fl. austr. 

 p. 205. t. 5. f. 1-1'. Hippomarathrum pelviforme, fl. wett. st. 

 Hipp, vulgare, Rcehl. Hippomarathrum, Riv. pent, irreg. t. 

 67. Flowers white. Umbels smoothish, not tomentose as in S. 

 leucospermum. Fruit pubescent while young, but glabrous or 

 nearly so when mature. The wild plant is nearly simple, but 

 the plant branches when cultivated in a garden. 



Var. |3, hebecdrpum (D. C. prod. 4. p. 144.) fruit beset with 

 down, even in the mature state. If. H. Native of Siberia. 

 Nearly allied to S. tomentosum, but the habit is more that of S. 

 Hippomarathrum, and the umbel is downy, not tomentose. 

 Horse-fennel. Fl. July. Clt. 1656. PI. 1 to 2 feet. 

 2 S. TOMENTOSUM (Vis. dalm. spec. p. 6. t. 3. f. 1.) stem sim- 

 ple, terete ; leaves biternate or triternate : leaflets filiform, chan- 



nelled : upper ones ternate ; involucra wanting ; involucel cup- 

 shaped, and is, as well as the fruit, tomentose from stellate 

 down. Tlf. H. Native of Dalmatia, on stony hills towards the 

 sea. This species is intermediate between S. Hippomarathrum 

 and S. leucospermum, nevertheless it is more nearly allied to the 

 former than to the latter. 



Tomentose Meadow-saxifrage. PI. 1 to 2 feet. 



SECT. II. HIPPOMARATHROIDES (agreeing with the plants in 

 section Hippomarathrum ; hence the name). D. C. coll. diss. 

 5. p. 47. prod. 4. p. 144. Involucra wanting or of few leaves. 

 Leaves of the involucels joined to each other, particularly at the 

 base. Flowers white. 



3 S. LEDEBOU'RII ; stem a little branched ; leaves glaucous, 

 bipinnate or tripinnate ; leaflets ternate, with the segments linear, 

 upper sheaths ventricose, nearly leafless ; involucrum of one 

 lanceolate leaf; involucel cup-shaped, divided at the apex into 

 long acuminated marcescent segments, about equal in length 

 to the flowering umbellule ; fruit prismatic, on short pedicels, 

 pilose. If. H. Native of Altaia, in dry grassy places at the 

 river Irtysch, near Loktewsk andSmejow. S. Hippomarathrum, 

 Led. fl. alt. 1. p. 335. Bess. enum. pi. volh. p. 13. no. 366. 



Ledebour's Meadow-saxifrage. PI. 1 to 1^ foot. 



4 S. BICHO'TOMUM (Bieb. fl. taur. 1. p. 235. suppl. p. 245.) 

 stem terete, erect, clothed with fine down ; lower branches short : 

 superior ones longer than the central umbel ; leaves pinnate ; 

 leaflets multifid, with the segments linear ; involucrum wanting ; 

 leaves of involucels joined together to about the middle, but 

 ovate and mucronate in the free parts. If. . H. Native of Tau- 

 ria, on chalky hills. Sims, hot. mag. t. 2073. Bubon rigidior, 

 Spreng. pug. 2. no. 101. and Biibon rigidus var. /3, Spreng. 

 syst. 1. p. 900. Plant glaucous. 



Dichotomous Meadow-saxifrage. Fl. June, July. Clt. 1818. 

 PI. 1 to 2 feet. 



5 S. GUMMIFERUM (Smith, exot. bot. t. 120.) stem terete, 

 thick, stiff, branched at the top, clothed with fine pubescence ; 

 leaves tripinnate, glaucous ; leaflets cuneated, trifid ; involucra. 

 of few leaves, rarely wanting ; umbels 20-rayed ; leaves of in- 

 volucel joined together nearly the length of the pedicels into an 

 expanded disk, having the free parts subulate, and exceeding the 

 umbellules. $ . H. Native of Tauria. Sims, bot. mag. 2259. 

 Bubon rigidus var. a, Spreng. in Schultes, syst. 6. p. 497. B. 

 eriocephalus, Spreng. syst. 1. p. 900. Stem yielding a gum 

 when cut. This is a showy plant, 2-3 feet high. Flowers white, 

 tinged with pink. 



Var. crithmifolia (D. C. prod. 4. p. 145.) stem, rays of um- 

 bels, and upper leaves rather velvety ; segments of leaves elon- 

 gated ; central umbel surrounded by a 10-12-leaved involucrum. 

 If. . H. Native of Greece and the islands of the /Egean sea. 

 Apium Grsecum saxatile crithmifolio, Tourn. cor. 21. voy. 1. p. 

 230. with a figure. Athamantha crithmifolia, Juss. herb. Per- 

 haps a proper species. 



Gum-bearing Meadow-saxifrage. Fl. July, Sept. Clt. 1804. 

 PI. 3 to 4 feet. 



6 S. RIGIDUM (Waldst. et Kit. rar. hung. 2. p. 156. t. 146.) 

 stem terete, thick, rather tomentose, stiff, sparingly branched ; 

 leaves glaucous, three or four times pinnate ; leaflets linear, 

 stiff, mucronate, rather pungent, usually trifid; involucrum none ; 

 umbel 20-rayed; leaves of involucel joined together at the base, 

 equal in length to the umbellule; fruit tomentose. If. H. Na- 

 tive of Hungary, in the fissures of calcareous rocks. Bubon 

 rigidus var. y, Spreng. in Schultes, syst. 6. p. 497. exclusive of 

 the synonyme of Besser. Bubon rigidus, Spreng. syst. 1. p. 900. 



.S^ Meadow-saxifrage. Fl.^June, Aug. Clt. 1710. PI. 1^ ft. 



7 S. CUNEIFOLIUM (Bieb. fl. taur. 1. p. 230. and suppl. 244. 

 exclusive of the synonymes,) stem unknown ; leaves several times 



