umbellifehm. 121 



Sisarum ^ differs from this section only in the more or less considerable 

 development of the involucre.^ 



We refer also to this genus as simple sections : Muretia,^ which is 

 Asiatic, and has a short fruit of Puiipinella, stylopods the union of 

 which forms a sort of dome, a fruit with nearly circular transverse 

 section and a seed with more or less concave face ;'* Chamcesciadium/ 

 Siberian plants whose compound umbels have the principal axis 

 short, so that the umbellules supported by long radii appear at first 

 sight as simple umbels ; the fruit is quite that of a Garum^ with the 

 numerous vittae of Piminndla, the stylopods are little developed ; 

 Patiulia,^ whose fruit, analogous to that of the Caraway, often (but 

 not constantly) has more prominent ridges and numerous vittce ; it 

 inhabits Chili; Lereschia,'^ a genus proposed for Cryptotcenia Thomasii,^ 

 a Neapolitan species with small stylopods and loose irregular inflo- 

 rescence ; and Petrosciadium,^ Asiatic plants which, with the characters 

 of Tragium, have in each furrow one, two, or rarely a larger number 

 of vittae. 



Thus understood, ''^ this great genus comprises about a hundred 

 and forty species, '^ and belongs to all the temperate regions of both 



1 Tausch, Flora (1834), 355. It is Sium Panulia. li, Pituranthos. \5, Brachyaphim. 16, 



Sisarum L. {Spec. 361 ;— DC. Prodr. iv. 124, Ammoselimim. 17, Microsciadium. 18, Cryptotce- 



n. 1). nia. 19, Falcaria. 20, Chamcesciadium. 21, Mu- 



" Bextham and Hookeh {Gen. 1008) think retia. 22 ? Pmicicia. 



that Paiicicia (Vis. PL Serb. Pempt. 4, t 1) ^^ Boiss. Diai/n. Or. sex. 2, ii.7S {Pimpinella), 



might well be a Phnphiella with involucre 77 ; vi. 78 {Pimpinella) ; Fl. Or. ii. 857 {Pttro- 



formed of well-developed bracts. selvntm), 858 {Ridolfia, Muretia), 859 {Chama- 



^Boiss. Jnji. Sc. NaL SGT. '3, i. U3; Fl. Or. sciadium), 860 {Deverra), 861 {Reutera), 864 



ii. 858.— B. H. Gen. 895, n. 63. {Pimpwella), 878 {Carmn), 889 {Podagraria). 890 



^ A^ \i is dl^o vn. ihsii oi Ridolfia segetum. {Ptychotis, Microsciadium)^ 892 {Falcaria). — 



* C. A. Mey. Verz. Cauc. PJl. 122.— Endl. Harv. and Sond. i^^. (7ffi?. ii. 535 (P^^roie^tmm) 



Qen. n. 4408.— B. H. Gen. 895, n. 63. 536 {Ptychotis), 538 {Carum, Pimpinella), 548 



^ The type of which is LigmticumPamd Clos, {Deverra). — Clos, C. Gay FL Chil. iii. 121 {Pe- 



C. Gay FLChil. Hi. 131 {L. Pa)/sil DC. Prodr. iv. troi-elimim, Wydleria), 130 {Ligusticum). — A. 



669) and to which perhaps are referable (B. H.) Guay, Ma?i. (ed. c) 195 {Zizia), 197 {Crypiotce- 



the other Chilian species of Ligusticum of Clos nia). — fe. Wats. Uii. St. Fxpl. Fort. Parall. Bot. 



(Phil. LiiDicca, xxxiii. 94). 121 {Fdosmia, Pimpinella). — Chapm. FL S. Un. 



7 Boiss. Ann. Sc. Nat. ser. 3, 1, 127. St. 161 (Cryptota-nia), 163 {Zizia).— Svack, Suit. 



^ DC. Prodr. iv. 119, n. 2. a Riff on, viii. 195 {yEgopodium), 197 {Pimpi- 



3 Edgew. Trans. Linn. Soc. xx. 51. — ? Aniso- nella).—GB.^ii. et Gomi. FL de Fr. i. 727 {Pim- 



metros Hassk. Flora (1847), QOL—Murrithia pviella), 729 (Bioiium), 731 {JEgopodium), 733 



ZoLL. Nat. und Gen. Arch. Neerl. Lnd. ii. 576. — {Falcaria, Ptychotis), 738 {Petroselinum) . — 



Lleterachcena Zoll. kc. cit. 577. Walp. Rep. ii. 391 {Petroselinum, Wydlerid), 



^" To the twelve sections admitted (B. H.) : 392 {Ptychotis, ^gopodium), 393 {Carum, Lo- 



1, Bunioides. 2, Tragoselinum. 3, Reutera. 4, matocarum, Bunium), 394 {Sympodium, Cha- 



Tragium. 5, Petrosciadium. 6, Zizioides. 1, Zizia. mcesciadium), 395 {Pimpinella, Reutera), 396 



8, Petroselinum. 9, Trachyspermum. 10, Edosmia. {Ridolfia) ; v. 848 {Gymnosciadium, Petrose- 



II, Bunium. 12, Fucarum {Carvi), we add, — 13, linum), 8\9 {Microsciadium), 850 {^gopodium, 



