MR. J. MIERS ON THE HIPPOCRATEACEJE OF SOUTH AMERICA. 34'7 
nodiis longissimis, ramulis patentissime oppositis, tenuibus, subcompressis, pallide 
opacis, striatis: foliis subparvis, oblongis, imo subrotundatis, apice valde obtusis, 
obsolete crenato-serrulatis, marginibus planis, cartilagineis, supra viridibus, nervis 
tenuissimis arcuatim nexis, valde reticulatis, vix prominulis, opacis, sub lente minu- 
tissime granulatis, subtus pallidis, glauco-opacis, minute granulatis; petiolo tenui, 
profunde canaliculato, limbo 10-plo breviore; stipulis parvis, acutissimis: paniculis 
axillaribus, folio duplo longioribus, fusce rubiginoso-tomentosis, divaricatim dicho- 
tome ramosis, cum ramulis 2 paucifloris in dichotomiis, floribus in ultimis ramulis 
subglomerulatis; bracteolis ovatis, cuspidato-acutis, subdenticulatis; pedicellis 
brevibus; petalis late oblongis, acutis, extus rufo-tomentellis, intus apice barbatis; 
disco alte conico, subangulato, flavide tomentello, apice rufo-tomentoso ; ovario sub- 
abscondito; stylo breviter exserto. In Brasilia: v. s. in herb. Hook. (ex hb. Imp. 
Vindobon. 1960). 
This is a slender scandent plant, with elongated, extremely divaricated branches and 
small subserrulated leaves, and a very lax inflorescence. The axils of the branchlets are 
about 2 in. apart, those of the branches much longer; the leaves are 14-1? in. long, 
8-10 lines broad, on a slender petiole 2 lines long; the peduncle of the panicle is 9 lines 
long, the primary and secondary very divergent branches are 5 lines, the rest gradually 
shorter, the ultimate ones bearing few aggregated flowers; when expanded, the flower is 
3 lines in diameter, on a pedicel 1 line long. 
22. HIPPOCRATEA ACUTIFLORA, Mog. & Sess. in DC. Prodr. i. 568: scandens, ramulis 
| tenuibus, teretibus, fistulosis, nitidis, glabris, nigris, patentissimis, cum axillis 
remotis et dilatatis: foliis elongato-ellipticis, utrinque acutis, aut apice obtuse 
acuminatis, subserratis, dentibus remotis cuspidato-mucronatis, submembranaceis, 
supra fusco-viridibus, nervis subimmersis, glaberrimis, opacis, subtus lurido-brunneis, 
nervis tenuissimis arcuatim nexis vix prominulis, creberrime reticulatis, minute 
punctato-rugulosis ; petiolo tenuissimo, canaliculato, subtus ruguloso, limbo 8-10-plo 
breviore; stipulis parvis, acutis, deciduis: paniculis axillaribus, folio brevioribus, 
vel æquilongis, ferrugineo-tomentosis, remotiuscule dichotome divisis, cum ramulis 
brevissimis 3—4 paucifloris in dichotomiis ; floribus in ultimis ramulis brevibus aggre- 
gatis, pedicellatis ; petalis acute oblongis, utrinque tomentellis, intus apice barbatis ; 
disco alte conico, flavide tomentello: capsulis 3, obovatis. In Mexico: v. s. in 
hb. Mus. Brit., Mexico (Pavon, in flore). 
As the above plant, collected in Mexico by Pavon, agrees with the description of 
Mocino and Sessé, I have referred it to that species; it is remarkable for its slender, 
polished, fistulose branchlets and the character of its inflorescence, which has many 
aggregated pedicellated flowers in each dichotomy. The following branchlets are slender, 
with dilated axils, 3—4 in. apart; the leaves are 2-23 in. long, 8-10 lines broad, on a very 
slender petiole 3 lines long: the panicles are from 1 to 23 in. long; in the former case 
they are simply axillary; in the latter case they are compounded, owing to the fall 
or abortion of the ultimate leaves: the peduncle is 7 lines, the primary branches 
