148 ON SOUTH-AMEEICAN APOCTNACILS. 



on a peduncle 10 lines long, aU ferruginously pilose ; bracts acutely and broadly ovate, 

 5 Unes long; pedicels 6 lines long; sepals broadly ovate, 5^ lines long, hirsutulous on 

 both, sides ; coroUa 10-12 lines long^ sericeously villous outside ; tube ^ of that length ; 

 appendages linear, lanceolate, obtuse, densely papiUous, and with the stamens partly 

 exserted ; disk urceolate, crenately 5-lobed on the margin, as long as the ovary. 



12. Prestonia Ceakensis, nob. : volubilis, ramis subtenuibus, luteo-Jmbescentibus : foliis oblongis, imo 

 rotundatis et subcordatis, supeme sensim acute acuminatis, tenuiter chartaceis, marginibus revolutis 

 et subcrenulatis, supra pallide viridibus, subglabris, ad nervos iumiersos sulcatis et flavide puberuHs, 

 subtus ferrugineo-puberulis, nervis venisque reticulatis densius flavide hirsutulis : inflorescentia 

 lateral!, capitata, pubescente ; peduucido reflexo j floribus congestis, pediceUatis ; sepalis acute 

 oblongis, tubo coroUse brevioribus, extus hirsutis, intus squama lata lineari extus hirsuta munitis. 

 In Brasilia, prov. Ceara : v. s. in herb. Mus. Brit. Crato (Gardner sine numero) . 



Axils 5 in. apart ; leaves 3-5f in. long, 1-2^ in. broad, on pubescent petioles 2 lines 

 long ; reflexed peduncle 6 Unes long, bearing a capitate head of flowers If in. in diameter ; 

 pedicels 4 lines long ; sepals 5 lines long ; tube of corolla 7 lines long ; segments 4 lines 

 long; stamens inserted in the middle of the tube on a pilose ring ; cohering, acuminate ; 

 anthers and appendages semiexserted. 



13. Prestonia mollis, H. B. K. iii. 231, tab. 242: Hcemadictyon molle, A. DC. I. c. p. 427. In Peruvia, 

 prov. S. Juan de Bracamoras : v. s. in herb, meo Chachapoyas (Matbews). 



Mathews's specimen agrees with Kunth's drawing. It is a climbing plant, with very 

 slender tortuous subangular branches, with axils 3^4 in. apart, and having a transverse 

 ridge, with about 4 pectiuated small stipules on each face ; leaves oblong-elliptic, obtuse 

 or subtruncated at the base, and with a short suddenly acute acumen, pale green above, 

 subscabridulous, somewhat trinerved at the base, with other 5 pairs of fine divaricated 

 nerves, which are scabridly pUose, paler, yellowish, opake beneath, scabridly puberulous, 

 especially on the midrib and nerves, 2-3 in. long, |— 1:| in. broad, on scabridulous petioles 

 3-6 lines long; corymb solitary and lateral at the nodes, 2^ in. long, on a bare slender 

 peduncle rising out of the pectinated ring, 1 in. long, 2-3fid above, and bearing a con- 

 gested head of flowers on slender pedicels 4-6 lines long, each with an acute linear mem- 

 branaceous bract 4 lines long ; sepals acutely oblong, very membranaceous, reticulated, 

 subimbricate, 6 lines long, If line broad, each with a small inner triangular scale ; tube 

 of corolla a little swollen at the base, much contracted in the middle, of thin texture, 

 glabrous, 10 Knes long, with an almost obsolete disjointed ring in the mouth, and below 

 it 5 spathulate-linear appendages semiexserted; segments falcately oblong, subacute, 

 8, lines long ; stamens inserted in a pilose ring in the middle of the tube, on slender fila- 

 ments ; anthers acuminate, with 2 long, sharp, subdivaricated prongs, the summits 

 partly exserted; disk of 5 small, rounded, fleshy lobes, half-connate at the base, as long 

 as the ovary. 



Kunth was wrong in describing the lobes of the disk as distinct from the base, and 

 the ovary as divided : he was in error in figuring a thick ring in the mouth of the 

 corolla. 



