OO 



I^ycoiiofliiiiii Jac*ol»«>(»iiii. v. t. v. it.. tab. m -IV. 



Rhopalost.achij'i, Diphasinin.— Gaules erecti vel iiiagis proba- 

 biliter scandentes, teretes, piiiuatim ramosi, parce foiiati. Kami 

 stériles copiose dichotomi, rachidibus saepe plus minusve erectis. 

 foliatis, ramulis ultimis applanatis, erectis, ± 10 — 20 cm. longis, 

 basi + lV2~~l^/4 "'""■ '^tis. Folia heteromorpha : folia caulina 

 irregulariter sparsa, ± ^j^ — ^U ^■'"- It^nS'^, peltatim aftixa, parte 

 peltata minuta, oblonga, coriacea, carinata, in sicco pallide brunnea 

 ad castanea. apice basique producta, applanata. albo-scariosa, plus- 

 minusve decidua, parte basali brevi, plus minusve profunde 

 limbriata. parte apicali longe subulata. ciliolato-denticulata : folia 

 inferiora ramorum folijs caulinis similia, cetera in foliis ramulijrum 

 ultimorum sensim transeuntia: folia ramulorum plat\-sticha: folia 

 lateralia opposita, in planis -1 (specie plana li posita, isomorpha. 

 imbricata, basi longe decuri'enti-adnala (in sicco bi'unneai inrlusa 

 ± ^/.> — '^/j cm. longa, parte libéra brevi, crassa, convexa, apice 

 longa, subulata, erecta subappressa, plana, persistenti vel decidua, 

 jiarce serrulato ciliolata. albo-scariosa ornata; lateralia ventralia 

 partibus decurrentibus contigua, sulco angusto acuto ventnili et 

 sulco lato (iorsali separata : lateralia dorsalia lateralibus ventralibus 

 similia; folia intermedia in sulco iloi-sali in sei'iebus contignis 2 

 (specie série 1) jiosita, remota, parte decuri-enti auguste cuneato- 

 cariniformi, basi partis liborae applanata. apice apice foliorum 

 l.iteralium simili, lîami fertiles copiose divergenti-dichotonii, in 

 circuitu subrotundi, foliis foliis ramorum sterilinm similibus vel sub- 

 similil)us sed in ramulis ultimis n/g — Ocm. longis (= pedunculis 

 s[ticarum) non omnino similiter instructis. Spicae ad ramulos 

 ultimos terminales et sùlitariae, detlexae, cylindricae, + l — -Z^j.^cm. 

 longae et i,., cm. crassae; sporophylla adulta patentia, basi brevi 

 rotundatooblonga, coriacea, timbriatoscarioso marginata. apice 

 longo subulato, albo-scarioso, limbriato-ciliato-serrulato. 



It .seems Huit tlie stalks of the spikes and perhaps alsa 

 otlier portions of tlic plant are capable to curl and catch as 

 tendrils of a vinc wlien meeting other objects. — The ventral and 

 dorsal leaves of Ihe latéral rows are only distinguishable from 

 each other by tlio position (ventral or dorsal) of their apices. 



Sumatra (Pajokoemboeh, Oeloe Air, E. Jacobson No. i'-H9). 



