UMBELLIFERJE. 



99 



Feucedmium (Dorema) 

 Ammoniacum. 



88 '), the umbellules of which, instead of being united in umbels, are 

 graduated on the axes of a ramified chister. 

 This gives the inflorescence quite a peculiar 

 aspect; but the fruit is, in other respects, 

 quite that of a Ferula or a Peucedan, with soli- 

 tary vittae in the furrows, and often of very 

 little thickness.^ 



Buhon Galhanum^ (fig. 89), of the Cape, is 

 also a woody Peucedan, whose vittaB assume a 

 very large development, especially on the ven- 

 tral face of the carpels. They may advance 

 even to the median line which they occupy 

 only in the herbaceous species constituting the 

 genus Pteroselinum.^ In those named Thysse- 

 linuin,^ they are situate deep in the pericarp ; 

 but it is quite incorrect to call them seminal. 



The Alvardias ^ are Peucedans of tropical Africa, equally woody 

 and shrubby, the fruit of which is more largely winged than that of 

 P. Galhanum. The wings are large and thin also in the section 



Fig. 88. Fruit (f). 



nearer the true Peucedans. Boissier {Fl. Or. 

 ii. 985) has described as a Ferula of the section 

 Feiicedanoides, Polycyrtus Schlchtl {Linncea, 

 xvii. 126), which is Elceochytris Fenzl {Flora 

 [1843] ; III. Pl.Syr. 71, 1. 19). De Candolle had 

 separated Eriosynaphe {Prodr. iv. 175 ; Mem. 

 Ombell. 50, t. 1) from Ferula because the com- 

 missure of the raericarps was, he thoiight, to- 

 mentose. It is not at all so ; but on this face 

 are three vertical salient vittae, two of which 

 are marginal, formed of this whitish tissue, with 

 cellules full of gas, so common in the fruit of 

 the VmbellifercB and often called suberose. This 

 character can form only a sectional distinction. 

 Sometimes to Ptucedanum, sometimes to Ferula, 

 has been referred Opoidia Lindl. {Bot. Reg. 

 [1839] Misc. 66) which, according to Bentham 

 and Hooker {Gen. 920), is " verj'- likely a species 

 of Peiicedanum, allied to Polycyrta" and which 

 Boissier {Ft. Or. ii. 1089) still leaves among 

 the doubtful genera, because its oval fruit, with 

 slender vittae solitary in the furrows of the 

 primary ridges, has not been observed in its 

 maturity. The genus Ferula belongs perhaps 

 to N. America ; as A. Gray refers to it (ex S. 

 Wats. Unit. St. Expl. Fortieth Par all. Bot. 127) 

 Leptotccnia Nutt. {Torr. et Gr. Fl. N.-Amer. i. 

 639 ;— B. H. Gen. 922, n. 128), the fruit of which 

 (immature) does not appear to differ from that 



of the Peucedans ; but is said to be without 

 vittse at maturity. 



' Don, Trans. Linn. Soc. xvi. 601 ; Edinb. 

 Phil. Mag. ix. 46.— Endl. Gen. n. 4460.— 

 BoRszcz. Mem. Acad. Petersb. (1860) t. 3-5. — 

 B. H. Gen. 918, n. 124. — Biserneston Jaub. et 

 Spach, ///. PI. Or. i. 78, t. 40. 



2 We think that Euryangium (Kauffm. Mem. 

 Soc. Nat. Mosc. xii. [1871] 253, now recognized 

 as a Ferula (Hook. f. Bot. Mag. t. 6196), the 

 axes of whose inflorescence bear compound, sti- 

 pitate U'iibels on their entire length, are inter- 

 mediate between the Peucedans and Dorema. 



3 L. Spec. 364.— J ACQ. Hort. Vindob. t. 36.— 

 DC. Prodr. iv. 185, n. 1. — Selinum Galbanum 

 Spreng. Schult. Syst. vi. 563. — AgasylUs Gal- 

 banum Sprenq. Prodr. 22. — Bubon Koch, Umbell. 

 95 (not Spreng.). — Gaibanophora Neck. Elem, 

 n. 292. Bentham and Hooker refer to it Bregea 

 EcKL. and Zeyh. {Enum. 350) and Sciothamnun 

 Endl. {Gen. 780). At the same time they dis- 

 tinguish among the Peucedans of that country 

 Eupeiwcdamtm and Cynorhiza (Eckl. et Zeyh. 

 Enum. 350). 



< Reichb. Fl. Germ. Exc. 453 ; Handb. 220. 



5 HoFFM. Umbell. 153 (not Adans. nor Riv.). 



fi Fenzl Flora (1844), 312.— Endl. Gen. n. 

 4563*. — SteganotcBnia Hochst. Flora^ i. (1844) 

 Bes. Beil. 4. 



2 



