- Corona double; corolline lining the corolla-tube and forming minute processes in the sinus of its lobes, staminal annular.
- Corona staminal, simple or compound, annular, 5-10 lobed, with 5 processes from its inner face which overlap the anthers.
- Leafy herbs with terete stems and branches.
- Leafless herbs, with fleshy 4-angled stems and branches.
genus known by name only.
Odontanthera, Wight in Lindl. Veg. Kingd., 626.
Tribe 1. PERIPLOCEÆ.
1. PENTANURA, Blume.
Twining glabrous shrubs. Leaves opposite, elliptic, strongly nerved. Flowers small, fascicled on a short axillary peduncle, purplish. Calyx small, 5-glandular within. Corolla subcampanulate, fleshy; lobes concave, overlapping to the right. Coronal scales 0. Filaments free, arched, bases distant; anthers oblong, adherent below to the stigma, tipped with bearded appendages; pollen-masses granular; appendages of the corpuscles stipitate, flabellate. Stigma capitate, 5-angled. Follicles divaricate, cylindric. Seeds comose. — Species 2; a Sumatran and the following.
P. khasiana, Kurz in Herb. Calcutt.; glabrous, leaves elliptic-lanceolate acuminate at both ends, petiole slender. Pentanura sp., in regione Yunan and Periploca khasiana, Benth. in Gen. Pl. ii. 740 and 746.
Khasia Mts., alt. 3-4000 ft., J. B. H. & T. T., Kurz.— Distrib. Yunan. Branches smooth. Leaves 4-5 by 1¼-1½ in., reddish when dry beneath and finely reticulated, midrib stout; nerves 8-10 pairs, arched; petiole ½-¾ in. Peduncle stout, ¼ in. in the Khasian specimen, ¼-1 in. in the Yunan ones. Corolla about ¼ in., diam.; lobes pubescent within, pink. Filaments and back of anther pubescent as in Phyllanthera (which is perhaps not generically distinct) in the Yunan specimens, glabrous in the Khasian. Style elongate; stigma 2-lobed at the top. Follicles (young) in Khasian specimen ½-⅔ in. long, ovoid, incurved, obtuse. — I have not seen the Sumatran species which is the type of the genus.
2. HEMIDESMUS, Br.
Twining shrubs. Leaves opposite, hoary or pubescent beneath. Flowers small, in opposite crowded subsessile cymes, greenish-purple. Sepals glandular within, acuminate. Corolla rotate; lobes thick, valvate. Coronal scales 5, on the corolla-throat, alternate with its lobes, short, thick. Filaments distinct; anther-tips connate, inflexed, membranous; pollen-masses cohering in pairs in
