284 
unarmed, rather wrinkled. ©. 
H. Native of North America, at 
the Red river. D.C. mem. 5. t. 
10. f. p. Herb a hand high, 
smooth, slender. Lobes of leaves 
or leaflets capillaceous. Umbels 
4-5-rayed. Involucel of 3-4 
leaves. (f. 62.) 
Unarmed-fruited Leptocaulis. 
Pl. 4 foot. 
FIG. 62. 
§ 2. Fruit muricated or echi- 
nated, 
2 L. pirru'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. ©.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. Pl. 4 foot. 
3 L. prvarica‘rus (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. ©. H. Native of Lower Carolina, in dry pastures. Daticus 
divaricatus, Walt. car. p. 114. Sison pusillum, Michx. fl. bor. 
amer. 1. p. 168. Ell. sketch. 1. p. 356. A’mmi divaricdtum and 
Ligtsticum pusillum, Michx. fl. amer., bor. 1. p. 168. Pers, 
ench. 1. p. 308. and 515. Sison divaricatus, Spreng. umb. spec. 
p- 113. Æthùsa divaricata, Nutt. gen. amer. 1. p. 190. Flowers 
white. 
Divaricate Leptocaulis. Pl. 1 foot. 
4 L. pa‘rens (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. ©. 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. ecurna‘rus (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. ©. H. Native 
of North America, at the red river. 
Echinated Leptocaulis. Pl. 4 foot. 
Cult. The seeds only require to be sown in spring. 
XLIV. PTYCHO'TIS (from zrvxn, ptyche, a plait, and ove, 
wroc, 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.—Binium, Lag. am. nat. 2. p. 104.— 
Séseli species of authors.—Ammoides, Adans. fam. 2. p. 96. 
Liv. syst. Penténdria, 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. 
UMBELLIFERZ. XLIII. Lertocavuis. 
XLIV. Prycuorts. 
Secr. I. Evprycuodris (altered from the generic name). D.C. 
prod. 4. p. 108. Universal involucrum wanting. Ribs of fruit 
smooth, not muricated. 
1 P. HETEROPHY'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. 3. H. Native 
of the south of France, Piedmont, Switzerland, &c. in gravelly 
and stony fields. Æthùsa Bùnius, Murr. syst. p. 236. D. C. fl 
fr. 4. p. 293. Càrum Bùnius, Lin. syst. nat. 12. p. 733. Jacq, 
vind. 2. t. 198. Æthùsa montana, Lam. fl. fr. 3. p. 649. Sé- 
seli saxifragum, Lin. spec. p. 374. D. C. fl. fr. p. 503. Pimpi- 
nélla Genevénsis, Vill. dauph. 2. p. 604. (exclusive of Barrel. 
syn.) Séseli Bùnius, Vill. dauph. 2. p. 588. Mèum hetero- 
phyllum, Moench, meth. p. 86. Sìum saxifragum, Roth, fl. 
germ. 2. p. 838. Sison divaricatus, Spreng. in Schultes, syst. 
6. p. 411.—Dalech. lugd. p. 774. f. 2. : 
Variable-leaved Ptychotis. Fl. July. Clt. 1778. Pl. 1} foot. 
2 P, verricitta‘ra (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 Matthioli, Dalech. lugd. p. 695. f. 2. 
Sison A’mmi, Ucr. hort. pan. p. 132. but not of Lin. ex Guss. 
Séseli ammoìdes, Gouan. ill. p. 16. but not of Jacq. but perhaps 
also of Lin. and Spreng. Séseli Túrbith, Ten. ex Steudel. 
Séseli verticillatum, Desf. atl. 1. p. 260. D.C. fi. fr. suppl. 5. 
p. 504. and probably of Spreng. and Link. Ptychòtis ammoìdes, 
Koch, umb. p. 124. Séseli Córsicum, Link, enum. hort. berol. 
1. p. 283. Séseli pusillum, Brot. fl. lus. 1. p. 457. 
Whorled-leaved Ptychotis. Fl. Ju. July. Clt. 1820. Pl. 1 ft. 
Secr. II. Tracuysrr’rmum (from rpaxue, trachys, rough, and = 
omeppa, 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. Céprica (D. C. mem. soc. gen. vol. 4.) stem erect, 
branched ; leaves nearly all cut into linear multifid lobes : uppe” 
leaves simply pinnate-lobed ; umbels 8-12-rayed ; leaves of invo- 
lucra linear, rarely trifid ; leaves of involucels linear ; fruit ovate, 
muricated. ©. H. Native of Egypt and Candia. A’mmi Copti- 
cum, Lin. mant. p. 56. Jacq. hort. vind. 2. p. 196. Daticus Cop- 
ticus, Pers. ench. 1. p. 307. Bùnium Cépticum, Spreng. prod. 
umb. p. 28. Trachyspérmum Cópticum, Link, enum. 1. p.267. 
A'mmi, Riv. pent. irr. t. 95. Bùnium aromáticum, Lin. mant. 
218. A’mmios Cóptica, Moench. 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 Cònium Africànum in the gardens. 
‘Var. B, fæniculifòlia (D. C. prod. 4. p. 108.) umbels of 6-7 
rays. ©. H. Native of Greece, in corn-fields. Séseli am- 
moìdes, Jacq. hort. vind. 1. t. 52. Smith, prod. fl. græc. 1. P- 
199. but not of Gouan, but probably of Lin. and Spreng. Sé- 
seli fæniculifòlium, Poir. dict. 7. p. 137. Sìson A’mmi, Lam: 
herb. Habit of Helosciàdium capillàceum or H. leptophýllum, 
but with the petals of the rest of the genus Ptychòtis. 
Coptic Ptychotis. Fl. June, July. Clt. 1773. Pi. 2 feet. 
4 P. aneruirorta (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. Pimpinélla anethifdlia, D. Don, prod. fi. 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. 
k] 
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