Pachypodium.'] lxxxiv. APOCYNACEiE (staff). 231 



Corolla sweet-scented ; tube purple, cylindric, widened at the middle, 

 1|-1| in. long, hairy within below the stamens ; limb 2J-3 in. in diam., 

 white inside, pink on the back ; lobes broad, obliquely ovate, the inner 

 margin crisp. Anthers 41-5 lin. long. Disc cupular, slightly 5-lobed. 

 Follicles spreading at a right angle when mature, spindle-shaped, com- 

 pressed, 3-5 in. long, glabrous. Seeds obovoid, compressed, 3J lin. long, 

 coma 2-3 times as long. — Hiern in Cat Afr. PI. Welw. i. 676. 



Iiower Guinea. Angola : Bumbo ; in dry rocky thickets between Quitibe de 

 Baixo and Quitibe de Cima, common, 1500 ft., Welwitsch, 1510 ! between Umpupe 

 and Palmfontein, 2900 ft., Bau7n, 21 ! 



Order LXXXV. ASCLEPIADE^. (By N. E. Brown.) 



Flowers regular, hermaphrodite. Calyx of 5 free sepals or rarely 

 5-lobed; segments imbricate, usually with minute processes at their 

 base within. Corolla hypogynous, gamopetalous, regular, 5-lobed, re- 

 flexed, rotate, campanulate, infundibuliform, hypocrateriform, urceo- 

 late, or tubular; lobes imbricate, contorted, or valvate in aestivation, 

 often recurved or connate at their tips ; tube within or at its mouth 

 .sometimes furnished with variously shaped lobules, flaps, keels, or pro- 

 cesses, which are distinct or connate and usually alternate with the 

 corolla-lobes, forming part or the whole of the corona. Stamens 5, 

 inserted at or near the bottom or rarely at the middle or mouth of the 

 corolla-tube, alternating with the corolla-lobes; filaments sometimes 

 free, but more usually connate into a tube around the ovary (forming, 

 with the anthers and their terminal appendages, the staminal column)^ 

 with the apex of the tube often united to the dilated part of the style ; 

 anthers not connate with each other, free or united to the dilated part 

 of the style, 2-celled, dehiscing by apical, longitudinal, or transverse 

 slits ; margins of the anthers or their basal prolongations below the 

 pollen-cells more or less horny and wing-like (the anther-iuings), usually 

 projecting outwards, the adjacent wings of each pair of anthers nearly 

 meeting and forming between them very narrow fissures leading to the 

 stigmatic cavities ; connectives of the anthers often produced into 

 membranous (or rarely fleshy or inflated) terminal appendages, or 

 apiculate or unappendaged ; appendages sometimes connate. Staminal- 

 column usually furnished with variously shaped free or more or less 

 connate appendages, which often have keels or.processes on their inner 

 face and are disposed in 1-3 series, forming the corona or part of it. 

 Pollen-contents of each anther-cell granular or united into one or two 

 waxy masses formed of an indefinite number of pollen -grains, and 

 attached in pairs or in fours, sometimes directly, but more usually by 

 means of arm-like processes (the caudicles), to each of the 5 small or 

 minute, horny or rarely soft, turgid or bilobed bodies (the pollen- 

 caiTiers), which rest, one on each of the 5 angles of the dilated part of 

 the style, the whole forming the pollinia, the masses attached to each 

 pollen-carrier always being derived from the cells of two diflerent but 



