208 R- Knuth. — Oxalidaceae. 



bus anguste cuneatis dilatate obovata, integra. Stamina zb sparsim, styli dense 

 puberuli. 



Uruguay: Dept. Soriano, Mercedes (Osten a. 1895, n. 3144 — Typus in herb. 

 Berol.!). — Blühend April. 



359. 0. Hossei R. Knuth in Fedde, Rep. XXIV. (1927) 52. — Caespitosa, ramis 

 saepe 5 — 8 mm crassis, 3 — 5 cm longis, brunneis vel fuscis, apice saepe furcatis, fere 

 sublignosis, zb puberulis. Folia tantum apicibus ramulorum sita, zb numerosa; foliola 3, 

 indumento subhirsuto praecipue infra et zb ad marginem induta, obcordata, antice sinu 



4 cm profundo zb acuto incisa, basi cuneata, 3 l /j — 4 mm longa, paullo angustiora, 

 subtus celluloso-lacunosa; petiolus 2 — 2% cm longus, sparsim pilosus, exs. filiformis, 

 inferne — verisimiliter süpulis adnatis — dilatatus et fuscus; haec pars inferior 

 accrescens, persistens, primo lanuginosa, demum subglabra, usque 5 mm longa, basi 

 2 mm lata; partes liberae stipularum non conspicuae. Pedunculi basales, circ. 2 cm 

 longi, petiolis plane consimiles, apice 3- rarius 1-flori. Bracteae lanceolatae, acutae, 

 subhirsutae. " Pedicelli 2 — 4 mm longi, pilosi vel subglabri. Sepala lanceolata, acuta, 

 sparsim pilosula vel glabrescentia, non raro apice indumento ciliari penicillata. Petala 

 aurea, sepalis 2-plo longiora. Stamina stylique puberuli. 



Argentina: La Rioja, Sierra Famatina, am Tocino-Paß, 4300 m (Hosseus, Exp. 

 La Rioja-San Juan a. 1915, n. 1913. — Typus in herb. Hossei!). 



360. 0. Arrojadoi R. Knuth in Notizbl. bot. Gart. Berlin VII. (1923) 425. — 

 Rhizoma zb verticale, saepe partitum, 4 — 5 mm crassum, 1 — 3 cm longum, stipulis 

 atro-fuscis dense obtectum. Stipulae 2 — 3 mm longae, e basi lata abrupte contractae, 

 acutae vel acutissimae, membranaceae. Folia 4 — 6, basalia ad apicem rhizomatis, longi- 

 tudine varia, 3 — 14 cm longa; foliola 3, late vel fere reniformi- obcordata, exs. mem- 

 branacea, supra glabra, subtus subtiliter celiulosa, usque 1 4 mm lata et 8 mm longa, 

 plerumque minora; petiolus saepe filiformis, glaber, usque 1 4 mm longus, foliolis multiplo 

 longior, saepe autem eis tantum 5 — 8-plo longior et 3 — 4 cm longus. Pedunculus 

 basalis, saepe unicus, petiolis toto modo aequalis, apice umbellam 1 — 3-floram gerens, 

 usque 16 cm altus. Bracteae 2 — 3 mm longae, lanceolatae, acutae, membranaceae, 

 apice manifeste glandulis 2 contiguis satis magnis instructae, glabrae. Pedicelli 2 — 

 2 3 /4 cm longi, filiformes, glabri. Sepala 6 mm longa, lanceolata vel ovata-lanceolata, 

 manifeste 3-nervata, apice glandulis 2 sursum contiguis deorsum furcatis rubris instructa. 

 Corolla 17 mm longa. 



Brasilien: Rio de Janeiro, Serra dos Orgaos, Centralstock, 2000 m, im Sumpf- 

 gebiet der Isabellona zwischen Moos (Luetzelburg a. 1916, n. 6615 — Typus!). 



361. 0. lasiopetala Zucc. in Denkschr. Akad. Muench. IX. (1823 — 24) 149, n. 17, 

 in Abh. Akad. Muench. I. (1829—30) 212, n. 25; Prog. in Mart. Fl. Bras. XII. 2. 

 (1877) 487; Stuckert, Cat. Oxal. de l'Argent., in Ann. Cons. Jard. Bot. Geneve XX. 

 (1919) 454. — Acetosella lasiopetala (Zucc.) O. Kuntze, Rev. Gen. I. (1891) 92. — 

 Acaulis, 8 — 25 cm alta. Rhizoma zz tuberöse incrassatum, usque 12 mm crassum, 

 ad Collum saepe 4 — 5 mm crassum, brunneo-atrum vel atrum, apice zb squamosum 

 rudimentis petiolorum, radicibus coriaceis sed vix crassis sparsim instructum, subsimplex, 



5 cm et ultra longum, zb verticale vel obliquum. Folia basalia, vix numerosa, 4 — 10, 

 zb laxa, trifoliolata, satis longe petiolata; foliola facie inferiore et margine zb sub- 

 hirsuta, facie superiore subglabra, usque 8 mm longa et 1 mm lata, late obcordata, 

 tenuia, viridia vel facie superiore marginem versus irregulariter minute atro-calloso- 

 punctata; petiolus 2 — 15 cm longus, foliolis 6 — multiplo longior, laxus, exs. ^2 mm 

 crassus, zb sparsim pilosus, basi infima vix vel non dilatatus. Pedunculi basales, 1 — 4 

 sicut pedicelli calyxque subglabri vel adpresse pilosi, 2 — 5-flori, 7 — 20 cm longi, exs. 

 1 — 4 1 / 2 mm crassi, laxi. Bracteae lineares vel lineari-subulatae, acutae, zb pilosae, 1 Y 4 — 

 2 mm longae. Pedicelli 2 — 4 cm longi, laxi, exs. fere filiformes. Flos 13 mm longus. 

 Sepala 3 — 5 mm longa, lanceolata, acuta, apice minute rubro-callosa. Corolla campanu- 

 lata, sepalis 4^2 — 6-plo longior; petala zb cuneata, antice rotundato-retusa, integra. 



