Loudonia. 17 



Tribus 1. Halorrhageae Schindler nov. trib. 



Garpella testa sclerenchymatica communi coalita; fructus maturus haud in mero- 

 carpia divisus. 



i. Loudonia Lindl.*) 



Loudonia Lindl. Swan River Bot. App. (1839) 42 et Veg. Kingd. (1847) 723; 

 Endl. Gen. (1840) 1197 et Ench. (1841) 640; Reichb. Nom. (1841) 169; Meisn. Gen. 

 Corara. (1843) 356; Walp. Rep. IL (1843) 100; Schlechtd. in Linnaea XX. (1847) 

 648; F. Muell. in Linnaea XXV. (1852) 385; Benth. Fl. austral. II. (1864) 471 ; Benth. 

 et Hook. f. Gen. I. (1865) 674; Baill. Hist. pl. VI. (1877) 476; Petersen in Engler 

 u. Prantl, Pflzfam. III. 7. (1898) 231. — Laudonia Nees in Lehm. PI. Preiss. I. (1844) 

 209. — Glischrocaryon Endl. in Ann. Wien. Mus. II. (1839) 209. 



Flores hermaphroditi proterandri. Calycis tubus 4- vel 2-pterus, lobis 4 vel 2 tubo 

 brevioribus. Petala 4 vel 2, cucullata concava vel plana. Stamina 8 vel 4, obdiplo- 

 stemona, filamentis compressis minutissime apicem versus attenuatis, antheris late 

 linearibus. Ovarium primum 4-loculare 4-ovulatum, demum septis evanidis 1-loculare 

 1-ovulatum; styli 4 vel 2 oblique capitato-stigmatosi. Fructus putaminosus, pericarpio 

 spongioso, 4-gonus vel 4-vel 2-alatus, 1-spermus. Semen oblongo-cylindricum , testa 

 membranacea, albumine copioso, embryone in axi albuminis cylindrieo radicula elongata. 

 — Suffrutices vel herbae perennes rhizomate lignoso, caulibus plurimis validis erectis 

 glaberrimis, fasciculos insignes cellularum elongatarum sclerenchymaticarum infra epider- 

 midem praebentibus. Flores in corymbos terminales multifloros dispositi, magni, aurei 

 vel sulphurei, bracteis ad basin ramulorum corymbi subfoliaceis minute adnatis. Plantae 

 siccae virescentes vel nigrescentes. 



Genus Australiae proprium speciebus subsectioni Spongiocarpo ex Halorrhagis 

 genere sat affinibus, imprimis inflorescentia ample composita diversis. — Flores con- 

 stanter entomophili. 



Conspectus specierum. 



A. Flores 4-meri. 



a. Epicarpium putamini adnatum, late 4-alatum ; inflorescentia 



corymbosa 1 . L. aurea. 



b. Epicarpium inflatum spongiosum, minute 4-alatum vel 

 4-angulatum; inflorescentia subcylindrica, inflorescentiis 

 partialibus capitatis 2. L. Eoei. 



B. Flores 2-meri ; raro 3-meri 3. L. Behrii. 



1. Loudonia aurea Lindl.! Swan River Bot. App. (1839) 42; Nees in Lehm. 

 PI. Preiss. I. (1844 — 45) 159; Schlechtd. in Linnaea XX. (1847) 648; Benth. Fl. 

 austral. II. (1864) 472. — L. flavescens Drummond in Hook. Lond. Journ. Bot. I. 

 (1842) 396. — L. citritia F. Muell. in Linnaea XXV. (1852) 385. — Suffrutex rhizo- 

 mate lignoso perennis, scoparius, ramosus, foliosus, usque ad 1 m altus, glaberrimus, in 

 sicco saepe cyanescens. Folia alterna, sessilia, dense vel sparse disposita, linearia, cras- 

 sula, semiteretia vel tenuia planiuscula, oblonga acuta, integerrima, coriaceo-rugulosa, usque 

 ad 50 mm longa et ad 4 mm lata. Inflorescentia ad caulis apicem corymbosa, bracteis 

 oblongis breviter acuminatis ramis floriferis non subjectis sed saepius adnatis; flores 

 hermaphroditi longe pedicellati, pedicello usque ad 6 mm longo tereti glaberrimo, 

 bracteolis 2 minutis linearibus crassulis mox deciduis glaberrimis praedito; calycis tubus 

 obverse pyramidalis vel ellipsoideus, 4-alatus, alis in pedicellum decurrentibus sensim 

 vel subito attenuatis retinatis, 3 — 5 mm longus et alis computatis 2 — 5,5 mm diam., 

 alis exceptis 1 — 2 mm diam., virescens vel sulphureus, lobis 4 ex late ovato breviter 

 vel longe acuminatis vel bene rotundatis subreniformibus erectis vel suberectis 1 — 2 mm 



* Dicata John Claud. Loudon, horticoltori botanico. 

 A. Engler, Das Pflanzenreich. IV. 225. 



