28-4 



UMBELLIFER^l. XLIII. LEPTOCAULIS. XLIV. PTYCHOTIS. 



unarmed, rather wrinkled. O- FIG. 62. 



H. Native of North America, at 



the Red river. D. C. mem. 5. t. 



10. f. /3. Herb a hand high, 



smooth, slender. Lobes of leaves 



or leaflets capillaceous. Umbels 



4-5-rayed. Involucel of 3-4 



leaves, (f. 62.) 



t/narmec/-fruited Leptocaulis. 

 PI. -J foot. 



2. Fruit muricated or echi- 

 nated. 



2 L. DIFFU'SUS (Nutt. in litt. 

 ex D. C. 1. c.) fruit muricated 

 from rather adpressed bristles ; 

 branches and rays of umbel diva- 

 ricate ; umbels and umbellules 3-rayed ; pedicels of umbellule 

 about equal in length to the rays of the umbel. Q. H. Native of 

 North America, at the Red river. Stem erect, slender, branched 

 at the apex. Lobes of leaves or leaflets capillary. Involucels of 

 1-2 leaves. Pedicels half an inch long. Flowers white. 



Diffuse Leptocaulis. PI. \ foot. 



3 L. DIVARICA'TUS (D. C. mem. 5. t. 10. f. A.) fruit muricated 

 from rather adpressed bristles ; branches and rays of umbel di- 

 varicate ; umbellules 2-3-rayed ; pedicels of umbellules one-half 

 shorter than the rays of the umbel ; central flower nearly ses- 

 sile. O- H. Native of Lower Carolina, in dry pastures. Daucus 

 divaricatus, Walt. car. p. 114. Sison pusillum, Michx. fl. bor. 

 amer. 1. p. 168. Ell. sketch. 1. p. 356. A'mmi divaricatum and 

 Ligusticum pusillum, Michx. fl. amev. bor. 1. p. 168. Pers. 

 ench. 1. p. 308. and 315. Sison divaricatus, Spreng. umb. spec. 

 p. 113. ^thusadivaricata, Nutt. gen. amer. 1. p. 190. Flowers 

 white. 



Divaricate Leptocaulis. PI. 1 foot. 



4 L. PA'TENS (Nutt. in litt. ex D. C. prod. 4. p. 107.) fruit 

 muricated from tubercles ; branches divaricate ; rays of umbels 

 and umbellules 4-5, rather contracted. 0. H. Native of 

 North America, at the red river. This is the largest species of 

 the genus, being a foot high or more. Lobes of leaves or leaflets 

 capillaceous. Flowers white. 



Spreading Leptocaulis. PI. 1 foot. 



5 L. ECHINA'TUS (Nutt. in litt. ex D. C. prod. 4. p. 107.) fruit 

 echinated by spreading bristles ; branches at length divaricate ; 

 umbels and umbellules 5-rayed, rather diverging. O- H. Native 

 of North America, at the red river. 



Echinated Leptocaulis. PI. ^ foot. 



Cult. The seeds only require to be sown in spring. 



XLIV. PTYCHOTIS (from nrux>?, ptyche, a plait, and ovc, 

 IIITOQ, ous, otos, an ear ; the petals have a plait in the middle, emit- 

 ting a little ear or segment). Koch, umb. 124. D. C. coll. mem. 

 5. p. 39. prod. 4. p. 107.- Bunium, Lag. am. nat. 2. p. 104. 

 Seseli species of authors. Ammoides, Adans. fam. 2. p. 96. 



LIN. SYST. Pentdndria, Digynia. Margin of calyx 5-toothed. 

 Petals obovate, bifidly emarginate, having a transverse plait in 

 the middle, which emits a little segment. Fruit compressed from 

 the sides, ovate or oblong ; mericarps with 5 filiform equal ribs ; 

 lateral ribs marginating, having the furrows between the ribs 

 furnished with one vitta each ; carpophore bipartite. Seed terete 

 or gibbously convex, flat in front. Annual or biennial herbs. 

 Cauline leaves multifidly capillaceous. Umbels compound, having 

 the universal involucra variable, and the partial ones of many 

 leaves. Flowers white. This is a very distinct genus from the 

 form of the petals, having the segment not at the apex, but rising 

 from the transverse plait. 



SECT. I. EUPTYCHOTIS (altered from the generic name). D. C. 

 prod. 4. p. 108. Universal involucrum wanting. Ribs of fruit 

 smooth, not muricated. 



1 P. HETEUOPHY'LLA (Koch, 1. c.) stem erect, much branched, 

 divaricate ; radical leaves pinnate ; leaflets roundish, deeply ser- 

 rated ; cauline leaves multifid, with linear-filiform segments ; 

 fruit oblong ; leaves of involucel all setaceous. $ . H. Native 

 of the south of France, Piedmont, Switzerland, &c. in gravelly 

 and stony fields, -fluhusa Bunius, Murr. syst. p. 236. D. C. fl. 

 fr. 4. p. 293. Carum Bunius, Lin. syst. nat. 12. p. 733. Jacq. 

 vind. 2. t. 198. .fluhusa montana, Lam. fl. fr. 3. p. 649. Se- 

 seli saxifragum, Lin. spec. p. 374. D. C. fl. fr. p. 503. Pimpi- 

 nella Genevensis, Vill. dauph. 2. p. 604. (exclusive of Barrel. 

 syn.) Seseli Bunius, Vill. dauph. 2. p. 588. Meum hetero- 

 phy'llum, Mcench, meth. p. 86. Slum saxifragum, Roth, fl. 

 germ. 2. p. 338. Sison divaricatus, Spreng. in Schultes, syst. 

 6. p. 411. Dalech. lugd. p. 774. f. 2. 



Variable- leaved Ptychotis. Fl. July. Clt. 1778. PI. Ij foot. 



2 P. VERTICILLA'TA (Duby, bot. gall. p. 235.) stem erect, 

 branched ; leaves all cut into somewhat verticillate capillaceous 

 multifid segments ; fruit ovate ; some of the leaves of the involucel 

 are setaceous, and others spatulate and awned. . H. Native 

 of Mauritania, Portugal, Sicily, Corsica, Sardinia, Etruria, Dal- 

 matia, in fields. A'mmi Matthloli, Dalech. lugd. p. 695. f. 2. 

 Sison A'mmi, Ucr. hort. pan. p. 132. but not of Lin.' ex Guss. 

 Seseli ammoides, Gouan. ill. p. 16. but not of Jacq. but perhaps 

 also of Lin. and Spreng. S6seli Turbith, Ten. ex Steudel. 

 Seseli verticillatum, Desf. all. 1. p. 260. D. C. fl. fr. suppl. *. 

 p. 504. and probably of Spreng. and Link. Ptychotis ammoides, 

 Koch, umb. p. 124. Seseli Corsicum, Link, enum. hort. berol. 

 1. p. 283. Seseli pusillum, Brot. fl. lus. 1. p. 457. 



fVhorled-leaved Ptychotis. Fl. Ju. July. Clt. 1820. PI. 1 ft. 



SECT. II. TRACHYSPE'RMUM (from rpaxe, trachys, rough, and 

 airfppa, sperma, a seed ; in reference to the muricated fruit). 

 Link, enum. 1. p. 267. Universal involucra composed of a 

 few linear entire or trifid leaves. Fruit muricated. 



3 P. COPTICA (D. C. mem. soc. gen. vol. 4.) stem erect, 

 branched ; leaves nearly all cut into linear multifid lobes : upper 

 leaves simply pinnate-lobed ; umbels 8-12-raved ; leaves of invo- 

 lucra linear, rarely trifid ; leaves of involucels linear ; fruit ovate, 

 muricated. O. H. Native of Egypt and Candia. A'mmi Copti- 

 cum, Lin. mant. p. 56. Jacq. hort. vind. 2. p. 196. Daucus C6p- 

 ticus, Pers. ench. 1. p. 307. Bunium Copticum, Spreng. prod, 

 umb. p. 28. Trachyspermum Copticum, Link, enum. 1. p. 267. 

 A'mmi, Riv. pent. irr. t. 95. Bunium aromaticum, Lin. mant. 

 218. A'mmios Coptica, Mcench. meth. p. 99 J. Bauh. hist. 3. 

 p. 2. p. 25. with a figure. Lob. icon. 725. f. 2. The petals 

 exhibit a little segment, but it is adnate to the middle nerve. 

 The plant is falsely called Conium Africanum in the gardens. 



Far. j3,fcenicultfdlia (D. C. prod. 4. p. 108.) umbels of 6-7 

 rays. 0- H. Native of Greece, in corn-fields. Seseli am- 

 moides, Jacq. hort. vind. 1. t. 52. Smith, prod. fl. graec. 1. p. 

 199. but not of Gouan, but probably of Lin. and Spreng. Se- 

 seli fceniculifolium, Poir. diet. 7. p. 137. Sison A'mmi, Lam. 

 herb. Habit of Helosciadium capitlaceum or H. leptophyllum, 

 but with the petals of the rest of the genus Ptychotis. 



Coptic Ptychotis. Fl. June, July. Clt. 1773. PI. 2 feet. 



4 P. ANETHIFOLIA (D. C. prod. 4. p. 108.) stem erect, branch- 

 ed ; leaves all multifid, with linear hair-like segments ; umbels 

 of 20 rays ;_ rays rather pubescent; leaves of involucra linear, 

 undivided. . H. Native of Nipaul. Athamantha ? anethi- 

 folia, Wall. mss. Pimpinella anethifolia, D. Don, prod. fl. nep. 

 p. 184. Perhaps only an uncultivated variety of P. Ajowan, ex 

 Wall, but the leaves are much more jagged and larger, and the 

 rays of the umbel more numerous. 



