4924 
MR. J. MIERS ON THE HIPPOCRATEACE/E OF SOUTH AMERICA. 
striata prominula, subtus pallidioribus, costa nervisque magis prominulis, opacis, 
sub lente minute granuloso-punctulatis; petiolo valido, tereti, sulcato, rubicundo, 
transversim corrugato, limbo 12—15-plo breviore: paniculis 3-4, subfasciculatis, è 
gemma axillari ortis, folio 4-plo brevioribus, fere a basi alternatim ramosis, ramis 
pseudodiehotome multidivisis, ramulisque subparallele erectiusculis, fortioribus, 
valde compressis, rubieundis et cinereo-pulverulentis, gradatim brevioribus; brac- 
teolis alternis, superioribus rarius suboppositis, parvis, acutis, submembranaceis, 
denticulatis; floribus in ramulis ultimis parvis, breviter pedicellatis, hinc subagglo- 
meratis; sepalis rotundatis, crassis, cinereo-tomentellis; petalis triplo longioribus, 
oblongis, flavidis, crassiuscule membranaceis, undulatis, utrinque pilis articulatis 
minutissimis crebre papillosis, marginibus erosulis; disco subtubuloso, carnosulo, 
glabro, crenato; antheris rubidulis, didymis, lobis distinctis, singulatim rima trans- 
versa extrorsum dehiscentibus; ovario valde depresso, disco occluso; stylo brevis- 
simo; stigmate majusculo, brevissime patentim trifido, lobis profunde iterum bifidis, 
laciniis compresso-linearibus, obtusis, subreflexis. In Brasilia occidentali: v. s. in 
herb. Mus. Brit. et Hook., Cuyaba (Martius 1278). 
This species is very different in appearance from the two preceding, on account of its 
very large leaves and their form; but it perfectly agrees with them in its inflorescence 
and floral structure. The axils of its stout branches are 3 inches apart; the leaves are 
8-9 in. long, 33 in. broad, on a petiole 6-9 lines long. The panicles are 2 in. long; their 
alternating primary and secondary branches, 5-7 lines long, are stouter than in the other 
species: the pedicels of the flowers are 1-13 line long; the petals are ¿ line long; the 
three branches of the stigma, with their more deeply divided segments, are here seen 
most distinetly to stand opposite to the stamens. All parts of the inflorescence are 
charged with conspicuous white elastic fibres, as in the other species. 
DESCRIPTION OF THE PLATES. 
PLATE XVI. 
Portion of a plant of Hippocratea volubilis. 
. 1. A flower in bud. 
. 2. The same expanded : both nat. size. 
. 9. The same, seen from beneath. 
. 4. The same, seen from above. 
- 5. The sepals, showing the spiral vessels drawn out when they are pulled away. 
- 6. The petals showing the tuft of hairs inside, and the spiral vessels when pulled away. 
- 7. The three stamens in different positions, before dehiscence. 
Fig. 8. The same after dehiscence. 
Fig. 9. A longitudinal section of the calyx, disk, and ovary, showing the mode of insertion of the 
stamens, 
