SPACH. — REVISIO C.ENEUIS POTERIUM. 33 



Sectio I. — PIMPINELLOIDES, Nob. 



Plantée herbaceae , aut cjlabrœ , aut pube eglandulosa hirsutœ v. 

 sericeœ; adore aromatico proprio. Gaules et rami acutanguli. 

 Florescentia [excepta spccie n° 1) centrifuga. Spicae in panicu- 

 lam laxam dispogitae, subglobosae, v. ellipticœ , v. ovales, 

 brèves. Fructus relicidatus , v. transverse rugosus , v. mûri- 

 catus,v. verrucosus; an gulis aéqualibus. — (Species habita et 

 foliis similîimae.] 



Subdivisio T. — Florescentia centripeta. 



1. POTERIUM DuRLEI, Nob. 



Fructus marginato-tetraqueter, reticalato-rugulosus. - - In 

 Numidiae umbrosis , prope La Colle, legit cl. Dm 



% ieu! 



Coulis 1-2-pedalis, ramosus, erectus, speciminibus obviis inferne la- 

 nato-hirsulus (sicut et foliorum inferiorurn petioli). Folia radicalia et 

 infima caulina 3-6 pollices longa , 9-17-foliolata. Foliola serrato-dentata, 

 glaucescentia , brève petiolulata , supra glabra , subtus (saltem foliorum 

 inferiorurn) magis minusve adpresso-pilosa (glabra in speciminibus ob- 

 viis non vidi); foliorum inferiorurn 1/2-11/2 pollicem longa, ovaPa, v. 

 oblonga, v. ovato-oblonga, basisaepissimecordata; superiorum oblongo- 

 lanceolata, acuminata, basi cuneata v. truncata. Spicœ ovales v, ovatae v. 

 subglobosae, MO lineas longae. Fructus 1-2 1/2 lineas longus, castaneus, v. 

 fuscus, v. stramineus, nunc obiter nunc grossius reticulatus, efoveolatus, 

 ovalis, v. ovatus, v. obovatus, v. ovato-conicus, oblusus, nunc omnino 

 estipitatus, nunc in stipitulum latiusculum obtusum angustatus. — Species 

 hsecce fructu omnino Poterium dictyocarpum (Nob.) refert; florescentia 

 autem centripeta (spicis pluribus in vivo mini comporta) nec centrifuga a 

 congeneribus caeteris ejusdem sectionis recedit. (Exam. s. sp. et v. c. e 

 seminibus a cl. Durieu lectis.) 



Subdivisio II. — Florescentia centrifuga. 



A, Fructus inarginato4elraqiieter,reticuïaio-rugidosiis, efoveolatus. 



2. Poterium Jaubertm, Nob. 

 Foliola supra sparse subtus dense adpresso-pilosa. Flores 



3' série. Bot. T. V. (Janvier I846.J 3 3 



