UMBELLIFER^. 



99 



Peueedanum {Dorema) 

 Ammoniacum. 



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

 graduated on the axes of a ramified cluster. 

 This gives the inflorescence quite a pecuHar 

 aspect; but the fruit is, in other respects, 

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

 tary vittse in the furrows, and often of very 

 'little thickness.^ 



Bubon Galbanum^ (fig. 89), of the Cape, is 

 also a woody Peucedan, whose vittsB assume a 

 very large development, especially on the ven- 

 tral face of the carpels. They may advance 

 even to the median Une which they occupy 

 only in the herbaceous species constituting the 

 genus Pteroselinum.* In those named Thysse- 

 linum,^ 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. Galbanum. The wings are large and thin also in the section 



Fig. 88. Fruit (?). 



nearer the true Peucedana. Boissiek {I'l. Or. 

 ii. 98a) has descrihed as a Ferula of the section 

 Feucedanoides, Polyeyrtiis Schlchtl {Linncea, 

 XTii. 126), which is Elueoehytris Fenzl {Flora 

 [1843] ; III. Pl.Syr. 71,t.l9). De Candolle had 

 separated Eriosynaphe (Pradr. iv. 175 ; M4m. 

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

 missure of the mericarps was, he thought, to- 

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

 are three Tertical salient Tittse, two of which 

 are marginal, formed of this whitish tissue, with 

 cellules fuU of gas, so common in the fruit of 

 the Umbelliferte and often called suherose. This 

 character can form only a sectional distinction. 

 Sometimes to Peueedanum, sometimes to Ferula, 

 has heen referred Opoidia Lindl. (Sot. Eeg. 

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

 and HooKEK (Oen. 920), is " very Ukely a species 

 of Peueedanum', allied to Polyei/rta" and which 

 Boissiek {Fl. Or. ii. 1089) still leaves among 

 the doutoul genera, because its oval fruit, with 

 slender vittse 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 Parall. Bat. 127) 

 Zeptotania Ntjtt. [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. Zinn. Soc. xvi. 601 ; Edinb. 

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

 BoEszcz. Mem. Aead. Petersb. (1860) t. 3-5. — 

 B. H. Gen. 918, n. 124. — :Disemeston Javb. et 

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



^ We think that Euryangium (Kauffm. M4m. 

 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 uaibels on their entire length, are inter- 

 mediate between the Peueedams and Zorema. 



3 L. Spee. 364.— jAca. :Eort. Vindob. t. 36.— 

 DO. Prodr. iv. 185, u. I. — Selinum Galbanum 

 Spreng. Sehult. Syst, vi. 563. — Agasyllis Gal- 

 banum Spkeng. Prodr. 22. — Bubon KooH, Umbell. 

 95 (not Spkeng.). — Galbanophora Neck. Elem. 

 n. 292. Bentham and Hookek refer to it Zregea 

 EcKL. and Zeyh. (Enum. 350) and Sciothamnus 

 Endl. [Oen. 780). At the same time they dis- 

 tinguish among the Peucedans of that country 

 Eupeucedimmm and Cynorhiza (Eckl. et Zeyh. 

 Enum. 350). 



< Eeichb. Fl. -Germ. Exc. 453 ; Bandb. 220. 



5 HoFFM. Qmbell. 153 (not Adans. nor Biv.). 



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

 4563'. — Steganotania Hoohst. Flora, i. (1844) 

 Bes. Beil. 4. 



2 



