ßg F. Pax. — Euphorbiaceae-Acalypheae-Chrozophorinae. 



sericeo-pilosi, inferne paulo glabrescentes. Petiolus vix disünctus; limbus 2V2 — "7 cm 

 longus, 1 — 2 1 / / 2 cm latus, elliptico-ovatus vel oblonge- ovatus, in foliis superioribus gra- 

 datim minor et ambitu angustior, acutus vel obtusus, basi obtusus vel in petiolum con- 

 tractus, integer, membranaceus , saepe rubescens, basi 3-nervius, pilis malpighiaceis 

 adpressis pubescens, demum supra glabrescens; costae infimae longe adscendentes. 

 Racemi valde elongati, 6 — 12 cm longi, multiflori, substricti, basi longo tractu nudi, 

 basi flores Q I — 2, deinde q 1 gerentes, nonnunquam parte superiore aborüva omnino 

 Q et tum paueiflori; rhachis adpresse pubescens; bracteae 1 ] /% — 2 mm longae, lineari- 

 lanceolatae; pedicelli (j* 1 — I ^ mm longi, Q 3 — 4 mm, sub fruetu ad 9 mm attin- 

 gentes, refracto-patuli. Sepala r? 5, lanceolata, acuminata, imo apice leviter uncinata, 

 3 mm longa, extus pilosa, intus glabra; petala lanceolata, acuminata, calycem paulo 

 superantia, basi columnae breviter adnata, extus parce pilosa; disci glandulae liberae, 

 glabrae, subeylindricae ; stamina inferiora 5, superiora 3; staminodia nulla. Sepala Q 

 ovato-lanceolata, acuminata, extus pilosa, intus glabra, 4*/j mm longa, sub fruetu 6 mm 

 attingentia et saepissime refraeta; petala rudimentaria, a nobis non visa; disci glandulae 

 ad 2 mm longae, glabrae, filamentiformes; ovarium breviter et dense.vestitum; styli 

 fere ad medium connati, parte libera ultra medium bifidi, lobi dilatati et crenulati. 

 Capsula 8 — 10 mm lata, 5 — 6 mm longa, tridyma, adpresse pilosa. Semina 5 mm 

 longa, subglobosa, apiculata, sublaevia. — Fig. \3A — D. 



Mittelamerikanisches Xerophytengebiet: Texas, nordwärts bis Kansas 

 und Arkansas gehend. — Texas (ßehr!, Drummond n. 317, Heller n. 1648!, 

 Lindheimer n. 518!, 528, 1 128!, Matthes n. 66!, Nuttall, Reverchon n. 2527*!). 



— Arkansas (Beyrich!). — Kansas (Hitchcock n. 485!). 



Nota. Copia indumenti ludit. — Specimen a Lindheimer sub n. 175! in Texas lectum 

 ad D. mercurialinam pertinet, sed indumentum foliorum et capsulae insuper majoris magis 

 villosum; certissime non ad D. pilosissimam ducendum est. 



26. D. pilosissima (Benth.) Heller, Gat. Northam. pl. (l 900) 5; Small, Fl. Southeast. 

 U. St. (1903) 699. — Serophyton pilosissimum Benth. Bot. Voy. Sulphur (1 8 44) 53. 



— Aphora pilosissima Torr. Bot. U. S. Mex. Bound. (1858) 197. — Argyrothamnia 

 pilosissima Müll. Arg. in Linnaea XXXIV. (1865) 148; in DG. Prodr. XV. 2. (1866) 

 740. — Perennis; caules erecti vel adscendentes, subadpresso-fulvo-villosi. Folia 

 subsessilia, obovata vel superiora lanceolato-elliptica vel oblongalo-ovata, basi obtusa, 

 supra ad nervös, subtus undique hirto-villosa. Racemi folia longe superantes, toti fulvo- 

 vel subferrugineo-villosi; pedicelli 3 — 10 mm longi. Sepala anguste lanceolata, longe 

 acuminata; petala qP spathulato-obovata, calycem subaequantia, Q rudimentaria; glan- 

 dulae utriusque sexus hirsuto-villosae ; ovarium hispidum. Capsula villosa, circ. 1 cm 

 lata. Semina reticulatim plicato-aspera, 4 — 5 mm diametientia. 



Mittelamerikanisches Xerophytengebiet: Texas (Berlandier n. 2566, 

 Drummond n. 263, 322). 



Nota. Speciem non vidimus. 



27. D. aphoroides (Müll. Arg.) Pax in Engler u. Prantl, Pflzfam. III. 5. (1890) 

 45; Small, Fl. Southeast. U. Stat. (1903) 69 8. — Argyrothamnia aphoroides Müll. 

 Arg. in Linnaea XXXIV. (1865) 146; in DG. Prodr. XV. 2. (l 866) 738. — Suffrutex; 

 caules e rhizomate Orientes, simplices, 25 — 30 cm alti, pilis elongatis, malpighiaceis 

 villosuli. Petiolus 1 — 3 mm longus, in limbum transiens; limbus in caulibus erectus, 

 2Y2 — ^ cm longus, 9 — 22 mm latus, lanceolatus vel ovato-lanceolatus vel ovatus, acutus 

 vel obtusus, basi acutus, integer, membranaceus, pilis malpighiaceis densis villosus, basi 

 trinervius; costae infimae longe adscendentes. Flores dioiei; racemi q 1 cum peduneulo 

 3 — 4 cm longo 4 — 6 cm attingentes, 5 — 8-flori, Q masculis subaequilongi, sed subuniflori, 

 supra florem axi rudimentaria producta; rhachis villosa; bracteae (jf* 3 — 5 mm longae, 

 lineari-lanceolatae, Q 3 mm longae, anguste lineares, acuminatae, utriusque sexus pi- 

 losae; pedicelli q^ et Q \ l / 2 — 2 mm longi, § reflexi. Sepala (f 5, lineari-lanceolata, 

 acuta, 4 mm longa, extus villosa, intus glabra; petala ovato-lanceolata, obtusa vel 

 acuta, unguiculata, 4 — 5 mm longa, calycem paulo superantia, columnae breviter adnata, 



