200 Mr. J. Miers on some of the Heliotropiez. 
—scandens, ramis teretibus, cano-tomentosis ; foliis ovato- 
oblongis, obtusule acuminatis, imo rotundatis aut acutius- 
culis, crassis, utrinque lanato-tomentosis, subtus albidis ; 
etiolo cano-tomentoso, limbo 6-plo breviore: paniculis ter- 
minalibus, dichotomis ; ramis plurimis, subalternis, diffuse 
divaricatis, spicatifloris, cano-tomentosis ; floribus unilate- 
ralibus, remotiusculis; sepalis lanceolatis, pubescentibus ; 
drupis hispidulis, 4-gastris—In Mexico, prope Acapulco 
(non vidi). 
Axils 2-1 inch apart; leaves 3-3} inches long, 13-16 lines 
broad, on a petiole 6—7 lines long. The terminal panicle is 
diffusely divided into about ten unilateral spikes, 4-5 lines 
apart, each about 3 inches long, with sessile flowers 1-2 lines 
apart. 
16. Messerschmidtia spigellifora, nob. ;—Tournefortia spigel- 
leeflora, A. DC. Prodr. ix. 525 ;—scandens, ramis teneribus, 
teretibus, fistulosis, patenter rufulo-pilosis ; foliis elliptico- 
oblongis, acuminatis, acute mucronulatis, imo obtusis, mem- 
branaceis, utrinque albo-tuberculatis et sparse adpresso- 
pilosis, supra fusco-, subtus pallide viridulis, nervis tenuibus 
obscuris; petiolo dense piloso, limbo 12-15-plo breviore: 
panicula terminali, longiuscula, laxe 3-4-chotome divisa, 
geniculatim flexuosa, dense pilosa, ramis ultimis curvulis, 
spicatifloris ; floribus crebre 1-seriatis, pilosis ; sepalis lobis- 
que corolle acutissime subulatis—In Guiana Britannica : 
v.s. in herb. meo (Schomb. 749). 
A climbing plant, with slender branches 3—# line thick, with 
axils 1 inch apart; leaves 8-34 inches long, 14-14 inch broad, 
on a petiole 3 lines long ; panicle 5 inches long and broad, with 
geniculated conjugated divisions widely spreading, three times 
dichotomously divided ; peduncle 1 inch long ; primary branches 
6-20 lines, secondary 9 lines, spicated branches 1} inch long ; 
sepals 13 line long, tube of corolla narrow, straight, 3 lines 
long, lobes of border 1 line long; anthers included, cohering at 
their summits; style elongated, turbinately thickened at. its 
apex, and surmounted by a rather long, obtuse, pilose stigma. 
17. Messerschmidtia membranacea, Gardn. Lond. Journ. Bot. 
i. 181 ;—Tournefortia membranacea, DC. Prodr. ix. 530 ;— 
Tournefortia floribunda, Fresen. (non H. B. K.) in Mart. Fl. 
Bras. xix. p. 54;—scandens, ramis compressis, flexuosis, 
subfistulosis, ferrugineo-tomentosis ; foliis ovato-oblongis, 
imo rotundatis aut subcordatis, apice acutis et breviter mu- 
cronatis, supra pilis brevibus rigide adpressis incanis crebre 
tectis, subtus pallidioribus, densius velutinis, in nervis costa- 
