20 RUBIACEA. 
cordata, vix coriacea, juniora tamen puberula, petiolo 1-2 lin. longo; stipule oblongz, obtuse, 
3-4 lin. longe, reflexee. Flores roseo-albi, pentameri, cano-pubescentes, laxe cymoso-corymbos!, 
breviter pedicellati ; corymbi terminales, trichotomi ; calycis lobi ovato-oblongi, subacuti, colorati 
(ut videtur), subineequales, 3-1 lin. longi; corolle tubus subcylindricus, 4-5 lin. longus, intus 
squamuloso-villosus, limbus lobis rotundatis, os villoso-squamulosum ; ovarium circiter 1 lin. 
diametro, multiovulatum. 
South Mexico, Chiapas (Linden, 1659 & 1661), Sierra de San Pedro Nolasco (Jur- 
gensen, 798). Hb. Kew. 
Intermediate between R. cordata and R. amena, and also having dimorphic flowers. 
11. Rondeletia jurgensenii, Hemsley, Diag. Pl. Nov. pars altera, p. 29. 
Foliis petiolatis membranaceis ovato-lanceolatis acuminatis glabris ad apices ramulorum confertis, 
floribus glabris tetrameris cymosis, cymis axillaribus et terminalibus paucifloris, calycis lobis 
linearibus obtusis, corolle tubo gracili sursum leviter ampliato intus puberulo, lobis rotundatis 
undulatis, ore nudo. 
Frutex glaber, ramis teretibus. Folia ad apices ramulorum conferta, petiolata, membranacea, ovato- 
lanceolata, *2-24-pollicaria, acuminata, acuta, basi cuneata, petiolo 2-3 lin. longo; stipule 
parve, decidue. Flores glabri, tetrameri, pedicellati, cymosi; cymz axillares vel terminales, 
pauciflore, 14~2-pollicares ; calycis lobi lineares, obtusi, 1 lin. longi; corolle tubus gracilis, 
sursum leviter ampliatus, 6-8 lin. longus, intus puberulus, limbus lobis rotundatis, undulatis, 
os nudum ; ovula numerosissima. Capsule valve demum usque ad basin fisse, ita ut 4-valvis 
evadit ; semina ? 
SoutH Mexico, Sierra de San Pedro Nolasco (Jurgensen, 248). Hb. Kew. 
12. Rondeletia laniflora, Benth. (Char. reform.) 
Folis amplis lanceolato-oblongis ellipticisve utrinque attenuatis supra glabris subtus incanis, floribus 
tetrameris extus arachnoideo-pubescentibus anguste cymoso-paniculatis brevissime pedicellatis, 
calycis lobis brevibus valde inzqualibus, corolle tubo angusto superne paullo dilatato, lobis 
brevibus suborbicularibus undulatis, ore nudo, capsula hirsuta oblonga, seminibus numerosis- 
simis angulatis punctulatis. . 
Frutex 8-10-pedalis, ramis teretibus, junioribus incanis. Folia petiolata, lanceolato-oblonga vel 
elliptica, 4-7-pollicaria, utrinque acuminata, acuta vel obtusa, discoloria, supra cito glabrescentia, 
subtus cano vel fulvo arachnoideo-lanata, petiolo 3-6 lin. longo; stipule ovato-lanceolate, 
2-4 lin. longe, valde acuminate. Flores tetrameri, extus arachnoideo-pubescentes, cymoso- 
paniculati, conferti, brevissime pedicellati; panicule terminales vel laterales, 4-8-pollicares ; . 
cyme pedunculate, multiflore ; bractee minute ; calycis lobi inequales, 1-24 lin. longi, per- 
sistentes ; corollz tubus fere cylindricus, vel sursum leviter et sensim ampliatus, gracilis, circiter 
6 lin. longus, limbus lobis brevibus, suborbicularibus, valde undulatis, os nudum. Capsula 
hirsuta, oblonga, compressa, 3 lin. longa, calycis lobis coronata; semina numerosissima, parva, 
irregulariter cubica, scrobiculata.— Benth. Pl. Hartw. p. 85. Arachnothryz laniflora, Planch. 
in Fl. des Serres, v. p. 442. 
SoutH Muxico, Orizaba (Bourgeau, 2618), Sierra de San Pedro Nolasco (Jurgensen, 
918), Orizaba (Botteri, 1016, 1071); Guaremata, Sierra de Las Nubes (Hartweg). 
Hb. Kew. 
The Mexican specimens we have referred to this species have broader leaves than 
the type, and rather smaller flowers with long styles, the original specimens having 
short styles. 
