.- H 



IRTNA. 



417 



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raro stibacuta • postcriora sensim magis in formam ovatam aut subcordatam v. dimidiato-cordatam aut 

 .umunulatam abeuntia , acuta , ad duos usque pollices aut magis etiam decrescentia , reclinata ; infima 

 duo d.midiata, auriculas parvas falcato-semilunures nervo exscrto setaceo-mucronatas margine hie 

 serraturis nonnuU.s magnis obtusis cxcisas exhibenlia. Racemi spic^formes , simpliccs aut compositi , 

 pamcua ternunali divarieata dimidium pedis vel plus pedem longa laxa ferrugineo - tomentosii 

 disposi 1. Flares ad rhachcs tomentosas fasciculis approximatis basi bractea subulato-deeidua suffultis, 

 pedieellati , parvi , polygamo - monoici. Pedkelli filiformes , ul calyces , ovaria , slyli et pistilla rudi- 

 inentaria m floribus masculis tomentosi. 3Iasc. : Calyx cupularis, S- raro 4-fidus; lacimis ovatis, 

 acutmscuhs, suba^qualibus. Petala laciniis calyeis paulo breviora, erecla, obovata , crassiuscula , 

 aibida, mtus su|)ra unguem cuneatum concaviuscuium nervo sursura divcrgenti-bifido fere incon- 

 spicuo percursum tumidiuscula et ibi ad margines ciliata; lamina brevi, latS, rotundata, papilloso- 

 scabrida. Discm annularis, crenulatus , carnosus , aurantiacus, glaber, organa fructifzcntionis cingens. 

 Stamina S v. 4, cum crenulis disci alternantia, per anthesin erecta et calyce vix longiora, deinde 

 filamentis excrescenlibuslongissime exserta. Filamenta filiformia/incurvata, subajqualia, pube'scentia, 

 rudimentum pistilli minutum ovoideo - didymum cingcntia, libera. Jntherw globoso-ellipsoide^', 

 dorso basi emarginata; affixae, punctata, purpurese, loculis appositis intus rima longitudinali 

 dclnscenlibus. Hermaphr. : Calyx, Corolla, Discus et Stamina ut in masculis, licet pctalis paulo 

 minoribus filamentisque multo brcyioribus. Omrmm sessile , tomentosum, rubro-fuseum, obcordato- 

 bi- rarissime trilobum, lobis ovulum angulo centrali ad basin afflxum ascendens campylotropum 

 funiculo umbilicali crassissimo stipatum includenlibus. Stylus centralis, lobos ovarii connectens, 

 longus, rectus, filiformis. Stigma terminale, obtusiuseulum , emarginatum v. brevissime bilobum ' 

 imberbe. Fructus binis v. abortu uno lobo sessili eliipsoideo pollicari glabro monospermo formatus; 

 pericarpio crasso, extus corticato, fusco, verruculoso, intus medulloso, incarnate, loculamento 

 membrana (s. endocarpio) tenui chartaceti gilva glabra obvestito. Semen sessile, ovoideum , basi 

 extremitatc inferiori truncata affixum, strato lenui ariUi mucilaginosi diapbani tandem exsiccati 

 obtectum. Testa crassiuscula, fungoso-coriacea, rufa , glabra, nucleum cxalbuminosum arete 

 obvestiens. Embryon rectum, conduplicatiim. Cotykdones maximte, inaquales, crasste, longitudi- 

 naliter applicativse , extus tuberculato-rugosae, superne in stipitem refractum applanatum radicula 

 deorsum spectante lineari obtusa compressa terminatum contracl£e. 



4. IRINA ALNIFOLIA. 



■t 



r 

 h 



I. foliolis 4" 6-jugis oblongo-lanceolatis basi subinsequali-acutis v. obtusis remote 

 glanduloso-serratis subtus tomentosis. 



\ 



Habit. In sylvis montanis Suraatrae. /. tomentosm affinis , cujus tamen foliola basi mngis rotundata et partim subcordata. 



Descr. Arbor 4-0-50 ped. Ramuli teretes, striati, ex fusco rubiginosi, inferne glabrati, superne 

 fusco-toaientosi. .Fo//a patentissima aut partim reclinata, 4-6, juga; rhachi 2 {-5 poll., supra basin 

 nodoso-incrassatam crassitiepennse corvinse, teretiuscula, rect^, sulcis aliquot exarata, tomentosa. 

 Foliola petiolulis brevibus tomentosis insidentia, opposita; anteriora majora, 4-S| poll. longa, 

 1-1 1 poll, lata, utrinque subangustata ; posteriora admodum decrescentia, apice subacuta, basi 

 inaequali- obtusa, quorum par infimum ad basin rliachios incrassatam auriculas minutas reclinatas 

 semilunatas caducas exhibet; textura chartacea, serraturis ad margines parvis remotis glandulosis, 

 venosa , infra tomentosa et inter venas prominentes reticulata, supra glabra, nitida et in nervo medio 

 tantum subtomentosa. Racemus terminalis, compositus, 5-7 poll., nutans, ochraceo-tomentosus , in 

 ramos paucos vagos patentes v. nutantes elongatos amenlaceos divisus, ad rhachin inter Acres dense 

 fasciculatos parvulos bracteis selaceis obsessus. 



Ill 



50 



r' 



