Phyllarthron
(from phyllon, a leaf, and arthros, a joint; in allusion to the leaflets, which were considered to be jointed to the leaf-stalk). SYN. Arthrophyllum. ORD. Bignoniaceae. A genus comprising about five species of glabrous, stove trees, confined to Madagascar. Flowers disposed in short, sub-sessile cymes at the tips of the branches; calyx campanulate, very shortly or acutely five-toothed; corolla tube enlarged above; limb sub-bilabiate, the lobes all ample, rotundate, spreading. Fruit one-valved; seeds almost round. Leaves opposite, whorled, or scattered two to five from the joints, oblong-cuneate or almost obovate, flat, coriaceous, shining, compound. The only species in cultivation is the under-mentioned. It thrives in a compost of sandy loam or fibry peat, to which may be added a small quantity of leaf mould and charcoal. Propagation is effected by cuttings of stubby side shoots, inserted in sand, under a bell glass, in bottom heat. P. Bojeriana (Bojer's).* fl., corolla funnel shaped, 1 1/4in. long, velvety without; lobes five, pink, very obtuse, broad; raceme terminal, subcorymbosely trichotomous. July. Branches trigonal or sub-ancipital; true leaves absent, but rachis developed into a leaf-like expansion, which is constricted above the middle; lower portion obovate-cuneate, upper one elliptical. h. 3ft. 1844. SYN. Arthrophyllum madagascariense. (B. M. 4173.)