Tab. 4173 



PHYLLARTHRON Bojerianum. 



Mr. Bojer s Phyllarthron. 



Nat. Ord. Bignoniace,e. — Didynamia Gymnospermia. 



Gen. Char. PHYLLARTHRON, De Cand. Arthrophyllum, 

 Bqjer, (non Blume). BiGNONiiE Sp. Auct. — Calyx ovatus campanulatus, 

 breviter et obtuse 5-dentatus. Corolla late infundibuliformis, lobis subro- 

 tundis. Stamina (4, didynamia, inclusa, prope basin tubi inserta. An~ 

 therm biloculares, loculis patentibus. Ovarium disco carnoso inserta bilo- 

 cularis: Stylus inclusus: Stigma bilabiatum). Fructus siliquaeformis, 

 carnosus, indehiscens, plurilocularis. Semina non alata, verticaliter sita, 

 pericarpio adfixa. — Frutices seu arbores ex insulis Africce Austr. ortee. 

 Folia opposita, rarius alterna, lomentacea, nempe petiolo articulato, arti- 

 cults 2 — 4 late foliaceis, foliolis aut nullis aut paucis et parvis. Rami 

 dichotomi. Racemi seu corymbi ex ultimis dichotomiis orti, foliis bre- 

 viores, pluriflori. Flores pedicellati. Bractese sub pedicellis oblongce. D C. 



Phyllarthron Bojerianum ; ramis trigonis aut ancipitibus, petiolis arti- 

 culatis junioribus viscosis, articulis 2 late marginatis, inferiore obovato- 

 cuneato, super, elliptico utroque pinnatim venoso, ramulis pedunculia- 

 que compressis, racemo terminali subcorymboso-trichotomo, calyce 

 ovato-campanulato enervio subtruncato obtuse 5-dentato. D C. 



Phyllarthron Bojerianum. De Cand. Prodr. 9. p. 243. 



Arthrophyllum Madagascariense. Bqjer, Hort. Maurit. p. 221. (excl. 

 Syn. Bignonia articulata. Desf. according to De CanaolleJ. 



A remarkable Genus of Madagascar, and some neighbour- 

 ing islands, allied to Colea, and named Arthrophyllum (from 

 «/>fyoj a joint, and puAAo* a leaf) by Bojer, under a belief that 

 the leaves themselves were jointed, or at least that the solitary 

 leaflet was articulated upon the leaf-stalk : and such would 

 appear at first sight to be the case with the present species, 

 but another kind, P. Noronhianum, "est remarquable par 

 ses feuilles plusieurs fois articulees, comme celles du Nopal ;" 

 hence De Candolle is disposed to consider it an articulated 

 petiole, without any leaf. I will not undertake to say, what 

 is its true structure : but I may observe, that in my native 

 specimen from M. Bojer, the older portion of the stem is 



