Diatenopteryx. 433 



gulis adspersa subfusca, arillo nullo. Embryo oleoso-carnosus (oleo et aleuro foetus). 

 curvatus, notorrhizus; cotyledones a marginibus compressae, erectae, superne radiatim 

 dilatatae, basi curvatae; radicula breviuscula, infera, centripeta, cotyledoni interiori 

 ad seminis basin applicita (nee plica testae saeeiformi separata, etsi testae Stratum 

 interius inter radiculam et cotyledonem, ut et inter cotyledones ipsas paullumper in- 

 trusum est). — Arbor sat alta vel (t. Glaziou) frutex. Ramorum liber insignis crystallis 

 elongatis »styloides« dictis. Folia (exstipulata) ab apice ad basin decrescentim pari- 

 vel plerumque impari-pinnata, rhachi nuda, foliolis 3 — 5-jugis, alternis vel suboppositis, 

 lanceolatis, subpetiolulatis, inaequilateris (latere interiore latiore), serratis, penninerviis. 

 subtiliter et anguste reticulato-venosis (venis per totum diaehyma transmissis), mem- 

 branaeeis, ad nervum medianum pilosis glandulisque, ut et ad marginem, microscopicis 

 clavatis obsitis, utriculis latieiferis non nisi sub nervo mediano extra vaginam scleren- 

 chymaticam instruetis, aliis vero cellulis secretoriis carentibus, epidermide sat mucigera. 

 Thyrsi ad ramulorum basin supra cicatrices foliorum delapsorum vel in foliorum axillis 

 paniculiformes, laxe cincinnigeri, cincinnis longius stipitatis sub-6-floris, superioribus 

 depauperatis 3 — 2-floris, immo ad florem singulum reduetis. Flores albi (Balansa) vel 

 grisei (Glaziou), medioeres, longiuscule pedicellati, pedicellis bracteolatis ad tertiam 

 inferiorem partem articulatis, sepalis petalisque cellulis secretoriis gummi-resina quadam 

 repletis persitis. Fructus conspicui, sicci pallide subfusci. 



Species 1, per Brasiliam australiorem et terras vicinas dispersa. 



Obs. Genus valde affine generi Athyana, a quo differt calyce parvo, fruetu divaricato- 

 bialato et foliorum rhachi nuda. Foliis interdum pari-pinnatis transitum quasi praebet ad genera 

 anomophylla tribus sequentes constituentia, praesertim ad tribus sequentis genera Atalaya et 

 Thouinidium fructibus divaricato-alatis instrueta. 



D. sorbifolia Radlk. ll.ee, in O. Kuntze, Revis. Gen. III. 2. (1898) 43, in Chodat et 

 Hassler, PI. Hassl. in Bull. Hb.Boiss. 2.ser. III. (1903) 807 (seors. impr. II. 188), in Her- 

 zog, Pflanzenformat. Ost-Bolivias in Engl. Bot. Jahrb. XLIV. (1910) 396, et in Herzog's 

 boliv. Pfl. in Mededeel. Hb. Leiden Nr. 19. (1913) 61, coli. 1030! 1630f.!; Herzog in Veget. 

 d. Erde, XV. (1923) 62, 83, 107, 109, 110, 132; Th. Peckolt, Heil- u. Nutzpfl. Brasil, in 

 Ber. d. deutsch, pharmaceut. Gesellsch. XI. (1901) 452; R. Endlich in Notizbl. Bot. Gart, 

 u. Mus. Berlin-Dahlem IV. Nr. 31. { Jul. 1903) 29, coli, n.38! — Thouinia ornifolia Griseb. 

 I.e.!, Hieron. 1. c.!, Niederl. 1. c. n. 1335!, 1765!, 2196! — Vulgo: Suiquillo incol. 

 Argentin. t. Hieron. 1. c; Quepe et Maria Preta t. Niederlein in sched. et quoad 

 Mar. Preta in Catal. Expos. Paris (1889)224,278; Ibira piü gu a zu Paraguay ensib. 

 t. Endlich in sched. — Arbor sat alta; rami teretes, cortice fusco, novelli pubescentes; 

 foliorum rhachis nee non foliorum nervus medianus praesertim subtus pilis flavidulis 

 dense villoso-pubescens; foliola superiora elongata, lanceolata, inferiora abbreviata, 

 ovalia vel suborbicularia; thyrsi medioeres; reliqua ut supra. 



Arbor 10 — 16 m alta, ligno duro (Hieron.). Rami penultimi 2 — 4 mm crassi, in- 

 conspicue lenticellosi; ramuli novelli thyrsigeri basi perulis parvis ovatis acutis gla- 

 bratis suffulti nunc perbreves nunc elongati, 1 — 1,5 mm vix crassiores, internodiis 

 basilaribus circ. 0,5 cm, reliquis 2 — 5 cm longis. Folia superiora petiolo 1 — 1,5 cm longo 

 adjeeto 10 — 14 cm longa, 6 — 8 cm lata, basin versus angustiora, inferiora minora; 

 rhacheos villosae segmenta 1 — 1,5 cm longa; foliola superiora petiolulo 1 — 1,5 mm longo 

 adjeeto 6 — 7 cm longa, 1,5— r2 cm lata, inferiora decrescentim minora, infima sub- 

 orbicularia vix 1-centimetralia, omnia levius profundiusve et subargute serrata, praeter 

 nervum medianum utrinque glabra, latere interiore praesertim basi latiore paulluloque 

 breviore, in infimis vero latere exteriore breviore. Thyrsi laxiflori, quam folia plerumque 

 breviores, 6 — 10 cm longi, 2 — 3 cm lati, minutim puberuli, fere a basi laxe cincinnigeri: 

 cincinni stipite 3 — 15 mm longo suffulti, bracteolis minutis pilosis ornati; pedicelli 

 puberuli, 5 — 8 mm longi, ad tertiam inferiorem partem articulati, circa articulationes 

 densius pilosi. Sepala 1,5 mm vix superantia. Petala 4,5 mm longa, 2 mm lata, lateralia 

 inaequilatera, squama oblique affixa apice petalis superioribus approximata crista in- 



A. Engl er, Das Pflanzenreich. IV. (Embryophyta siphonogama.) 165. 28 



