Nova genera et species IV. 17 



Marcgraviaceae. 



Marcg-ravia bracliysepala Urb. (u. sp.) foliis 3 — 5 mm. longe 

 petiolatis, ovato-ellipticis v. elliptico-oblongis, apice acute acumiuatis, 

 basi rotundata v. subtruncata perpaullo in petiolum productis, 5 — 10 cm. 

 longis, 3 — 4 cm. latis, 2 — 3-plo lougioribiis quam latioribus, nervis 

 lateralibus supra vix conspicuis v. obsolete prominulis, subtus plus 

 minus prominulis et obsolete v. vix reticulato-anastoraosantibus, in 

 margine ipso glanduloso-impressis, subtus satis supra basin utroque 

 latere poris 3 — 4 majoribus et subtus juxta marginem hinc illinc poris 

 nonnuUis minimis notatis, coriaceis v. chartaceis; racemis brevibus 

 15 — 35-floris, pedicellis fertilibus er. 0,8 mm. crassis, supra superne 

 lenticellosis, flori oblique insertis, prophyllis sub calyce ipso obviis; 

 bracteis sterilibus tubulosis, superne paullo crassioribus, 12 — 20 mm. 

 longis; sepalis er. 1 mm. longis; petalorum calyptra ovata v. ovato- 

 elliptica, 8- — 9 mm. longa, 4 — 5 mm. crassa; staminibus 9 — 14, antheris 

 oblonge -linearibus, effloratis quam filamenta paullo brevioribus; ovario 

 breviter cylindraceo, 5- raro 4-loculari, stylo fere 1,5 mm. longo. 



Marcgravia iimhellata Oriseb.f Flor. (1859) p. 110 (quoad plant, 

 jamaic. j)ro parte); Urb. hi Engl. Jahrb. XXI p. 517 (item), — non Linn. 



Usque ad 4 m. scandens (ex Hakkis). Rami floriferi qiiadraiiguli v. 

 subteretes, ad angulos lenticeUosi, epidermide cinerea arcte aecumbente. 

 Folia ramorum scand. (ex specim. Wullschl.) subsessilia, anguste ovata, 

 basi cordato - excisa, apice obtusissima , quae suppetunt, 4,5 ctn. longa, 2,5 cm. 

 lata, nervis supra obsolete, subtus paullo anastomosantibus , margine glandu- 

 loso-impressa. Folia ramorum fert. nervo medio supra plus minus impresso, 

 lateralibus 10 — 12 sub angulo GO — 70^ abeuntibus, margine plana, subtus 

 multo pallidiora. Racemi rhachis 1 — 1,5 cm. longa; pedicelli fertiles sub 

 anthesi 2 — 3 cm. longi, inferiores horizontaliter positi, caeteri patentes, sub 

 apice sensim incrassati, minutissime patenti-pilosi; prophylla vix semiorbi- 

 cularia er. 1 mm. lata, 0,4 — 0,G mm. longa. Flores steriles apicem rhacheos 

 occupantes erecti, 3 — 7; pedicelli usque ad bracteas 1 — 1,5 cm. longi; 

 bracteae medio er. 3 mm., sub apice er. 4 mm. crassae, ore basali paullo 

 ampliato, sub apice florem sterilem gereutes. Sepala semilunaria, exteriora 

 3 — 4 mm, interiora 4,5 — 5 mm. lata. Stamina uniseriata; filamenta coriacea 

 applanata, superne subulata, antheris paullo supra basin affixa, 4,5 — 5 mm. 

 longa; autherae effloratae vix 4 mm. longae, apice obtusae. Ovarium apice 

 truncatum; Stylus ad basin sensim incrassatus; stigma obsoletum. Fructus 

 breviter obovato-globuiosi. 



Hab. in Jamaica prope Moneague in Phoenix Park, m. Febr. flor.: 

 Alexander, prope Troy ad Tyre, 1500 — 660 m. alt. ad rupes: Harris 

 n. 8647, 8767, loco special! non indicato: Wullschlaegel n. 834. 



Obs. M. umhellata L. (ex Antillis minoribus) foliis duplo majoribus mani- 

 festius nervosis, valde anguste acuminatis, pedicellis 3-plo crassioribus, bracteis 

 sterilibus 3 — 3,5 cm. longis, calyce 3 — 3,5 mm. longo, petalorum calyptra 

 breviter ovata, 9 mm. crassa, staminibus duplo numerosioribus abunde differt. 



Urb an, Symb. ant. VI. 2 



