ON SOUTH-AMEEICAN APOCYNACEJS. 135 



segments elliptic, somewhat shorter than the tuhe ; lobes of disk obtusely oblong, as long 

 as the 2 ovaries. 



4. Stipecoma pulchra, nob. : scandens^ ramis crassis, demum glabris, ramulisqiie fistulosis, teretibus, 



validis, in axillis compressis et dilatatis, dense ochraceo- et floccoso-tomentosis : foliis profunde 

 peltatis, late ovatis, imo rolundatis et undulatis, apice in acumen brevissimum acutum subito con- 

 strictis, marginibus integris, subretusis, revolutis, ebartaceis, supra profunde viridibus, glabris, 

 opacis et rugulose granulatis, nervis basalibus 7 radiantibus, lateralibus utrinque 6, patentim 

 divaricatis, cunctis intra marginem arcuatim nexis, subimmersis, eveniis, subtus ocbraceo- 

 tomentellis, costa valida, nervis prominentibus transversim venosis; petioUs crassis, teretibus, 

 longiusculis, ochraceo-tomentosis, imo ssepe gyratim tortis : inflorescentia insigni, laterali, valde 

 elongata, undique fulvo-tomentosa ; pedunculo crasse tereti, fasciculis 2-4 remotis ramulosis in- 

 structo ; ramulis plurimis, congestim multifloris, dense imbricatim bracteatis ; bracteis magnis, 

 elliptico-oblongis, acutis, inferioribus majoribus ssepe foliola simulantibus ; pedicellis ex axillis 

 bractearum enatis, validis, et eis aequilongis, imo 2-bracteolatis, bracteolis lanceolatis paullo brevi- 

 oribus j sepalis lineari-oblongis, acutis, membranaceis, margiae undulatis, obsolete pilosis, intus 

 squamulis paucis minutissimis donatis ; coroUa glabra ; tubo cylindrico sepalis sesquilongiore, 

 medio valde constricto ; segmentis insequilateri-oblongis, acutis, expansis, sestivatione dextrorsum 

 eonvolutis ; staminibus ad constrictionem tubi insertis, inclusis ; filamentis subbrevibus, carnosulis ; 

 antberis cornels, apice cuspidatis, imo divergenter biaristatis ; disco 5-lobo, lobis carnosis virides- 

 centibus, rotundatis, imo connatis, ovaria 2 rotundata circumcingentibus ; stylo brevi, tenui ; 

 clavuncula crassa, cylindrica, 5-sulcata, glutinosa, et imo membrana lata horizontal! munita, stig- 

 matibus 2 miuimis. Rio de Janeiro, v. v. ad Morro Plamengo, et sice, in herb, meo (3877). 



I found this fine species in flower in 1837. The branches are J in. thick, have axils 

 9 in. apart ; leaves 5^7 ia. long, 3^5 J in. broad, the insertion of the petiole f-1 in. 

 above the base, the acute acumen j in. long and broad, the petioles 4-5 in. long ; the 

 ripe axUlary panicles are 5 J in. long, with about 6 branches, peduncle bare at the base 

 for 1 in., branches 1 in. long, bearing upwards many crowded flowers ; bracts many, 

 6 Hnes long, 2 lines broad ; pedicels 4 lines long ; sepals 6 lines long ; tube of corolla 

 9 Hnes long; segments 6 Hnes long, 8 lines broad; anthers 3 lines long; disk and 

 ovaries 1 Hne long ; style 3 lines long, clavuncle J line long. 



A drawing of this species, with its floral analysis, is shown in Plate XVIII. 



5. Stipecoma mucronata, nob. : Echites peltata, Miill. in parte (non Velloz), I. c. p. 159, tab. 53. fig. 2 



(semen) : scandens, ramulis teretibus, crassiusculis, fistulosis, adultis subglabris, junioribus fulvo- 

 tomentosis, axillis dilatatis paullo compressis: foliis profunde peltatis; ovatis, imo orbiculatis, 

 undulato-subplicatis, apicem versus rotundatis et in acumen liueare brevissimum obtuse mucro- 

 natis, marginibus vix revolutis, chartaceis, supra olivaceo-vlridibus, opacis, sparse pubescentibus, 

 nervis basalibus 7 radiantibus, lateralibus utrinque 5 paullo divergentibus marginem versus 

 arcuatim nexis, paullo prominuHs, reticulato-venosis, subtus ochraceis, densius tomentosis, 

 costa nervisque rubescentibus prominentibus; petiolis crassis, tomentosis, sensim deflexis, pel- 

 tatim aflfixis : racemis axillaribus, quam folium dimidio brevioribus, fulvo-tomentosis ; pedunculo 

 alternatim 6-floro, bracteato ; pedicellis remotiusculis, sub medium 2-bracteolatis ; floribus majus- 

 culisj sepalis linearibus, obtusulis, nervoso-membranaceis, glabris, pedicellum fere sequantibus, 

 intus squamulis 3 acutis singulatim munitis; corolla glabra; tubo crassiusculo, cylindrico, medio 

 constricto, ad faucem subito ampliato; segmentis magnis, oblongis, subtruncatis, inaequilateris 



