316 CRUCIFERE. — RAPISTRUM. 



lobulis dentibusque sœpius obtusiusculis; floribus apice racemorum co- 

 rymboso-confertis ; petalis albis, calyce subduplo longioribus, ungue 

 calyce longiore, limbo integro vel subretuso; racemis fructiferis sœpius 

 demum elongatis, pedicellis silicula brevioribus, demum incrassalis 

 erectis, erecto-patulis,rarius patenti-subdecurvis ; siliculis glabris, articulo 

 inferiore obconico monospermo semine pendulo, superiore ovato-lanceo- 

 lato a dorso valvarum subcompresso monospermo semine erecto superne 

 in siylum subfiliformem sensim atlenuato 6-8-costulato costulisplus minus 

 manifestis demum saepe obsoletis costula média lateralibus vix prœminen- 

 tiore; seminibus ovato-subcompressis. ®. Febr.-Maio. 



In ruderatis, ad vias et in mûris vetustis, inter segetes et in vervactis, in are- 

 nosis, alluviis et alveis. rrïn montibus Cafsae» (Desf. AtL). — Plan. A 1 : Dj. Oum- 

 el-Merazem prope Aumale (Char). — Sah. A 4 : in ditione Hodtia : in rupibus secus 

 Oued Bou-Saada (Reb. , Soîl.), in caespitibus Stîpae tenacissimae inter Bou-Saadaet 

 El-Halleg (Reb.); Messad ( Reb.) , Anil-el-Cometi (Vilm.), Oued El- Amour ! ', Oued 

 Soudan! (Perr.), Berrian! (Vilm.), Oued El-Bir!. — TUN. In Tunetia média et 

 austraîi frequens : ex. gr. : Hammantetï, Sousa! , El-Djem!, Sfax, in insulis Ker- 

 henna; Dj. Bou-tiedma, Gafsa, Gabes , Bas-el-Djerf, Zarzis, Dj. Tadjera, etc. 



In agro Tripolitano (Lx). 



Obs. Plantae nonnullas e Tripolitania et Cyrenaica ad B. bipinnalum ab aucto- 

 ribus relatœ ad species altéras ejusdem generis (Didesmus /Egyptius et D. tenui- 

 folius) et imo quoque ad Beboudiam microcarpam pertinent. 



Baphanus pinnatus Viv. (Libye. 3y, t. 16, f. k pessima), quem olim e spe- 

 cimine imperfecto herbarii Vivianiani io littore Magnœ Syrteos a Délia Gella 

 lecto ad Rapistrum bipinnalum retulimus (Gonf. Goss. Bev. FI. Libye, in Bull. Soc. 

 bot. XII, 276), e plantis in Cyrenaica ad thermas Koubbah a cl. Daveau et in Mar- 

 marica a cl. A. Letourneux lectis certissime ad Beboudiam microcarpam Coss. 

 (Comp. AtL I, 2i3 in adn.- Erucaria microcarpa Boiss.) referendus. !nde area geo- 

 graphica B. microcarpœ ab Arabia petraea per PaleRstinam, iEgyptum et Marma- 

 ricam usque in Cyrenaicam extensa. 



Didesmus eu m Bapistro consociandum censuimus nempe tantum differt petalis 

 albis, non luteis. — Didesmus JEgyplius Desv. (Journ. bol. III, 1 60, t. 9 5, f. 1 1 ; DG. 

 Syst. II, 658; Deless. le. II, t. 92; Boiss. Or. I, hok. - Myagrum Mgyptium L. 

 Sp. 895.- Bunias virgata Sibtb. et Sm. Grœc. t. 61 3. — Bapistrum Mgyptium Goss. 

 mscr., et Illustr. AtL I, t. 61, f. 12-1 3 mox edenda. - Exs. Ruhmer Cyr. 3o) in 

 Cyrenaica (Rohlfs, Ruhmer), in insulis Greta (Heldr.), Astypalea (Urv.) et Cypro 

 (sec. Sibth.), in iEgypto (sec. Hasselq.) crescens et D. tenuifolius DG. (Syst. II, 65g; 

 Boiss. Or. I, /io5. - Gakile Grœca, arvensis , siliqua striata, brevi Tourn. lnst. 

 Goroll. ^9, et Voy. Lev. I, 97 ic. - Bunias tenuifolia Sibth. et Sm. Grœc. t. 61A.— 

 Didesmus Mgyptius var. pinnata Jaub. et Sp. Illustr. Or. V, t. A 3 6.- Exs. Ruhmer 

 Cyr. 29 sub D. bipinnatus; Ky Cypr. 117, Sint. et Rig. 2 55; Heldr. Grœc. FI. 

 Hellen. 63 [1876]), in Tripolitania (Dicks. , Lx), in Cyrenaica (Ruhmer), in 

 Archipelago (sec. Tourn.), in insala Santorin (Lx), Gracia, insula Cypro indi- 

 gena, ambo e siliculis nonniillis rite analysi subjeclis in articulo superiore semen 



