32 A. GRISEBACH, 



primariis constituto sec. analysin cl. Falkenberg a trunco Phytolaccae, 

 Nyctaginearum et Mesembrianthemi Achatocarpum difFerre, sed vulgarem 

 structuram, cum affinitatibus haud consonam, idem botanicus quoque in 

 Seguiera et Rivina se observasse affirmavit. 



142. Ä. spinulosus Gr, n. sp. savmentosus , spinis brevibus ar- 

 matus , foliis chartaceis glabratis (junioribus puberulis) elliptico-oblongis 

 V. ovali-rotundatis acutiusculis v. obtusis in petiolum sensim attenuatis, 

 racemis axillaribus simpliciusculis : floribus utriusque sexus remotiusculis, 

 bracteolis minutis subrotundis margine membranaceis, staminibus 15 — 20 

 circa rudimentum ovarii obsoletum insertis, testa dura rugosa. — A. 

 nigricans Trian. (Ann. sc. nat. IV. 9. p. 46.), species novogranatensis, 

 differt „statura arborea, foliis acuminatis , racemis compositis et bracteis 

 mucroniformibus". Rami rigentes v. flexicauli-ascendentes, foliosi (inter- 

 nodiis plerisque pollice brevioribus) , spinis axillaribus v. supra gemmam 

 axillarem sitis subuliformibus, plerisque 3'" longis; folia 2 — 1" longa, 

 8 — 1 0"' lata, sicca nigricantia, mediano subtus prominulo, venis Omnibus 

 laxe reticulatis nec prominulis, petiolo 2"' fere longo, nodo tenui; racemi 

 \" (72") — 2" longi, pedicellis 1^2 — \"' longis, solitarii v. geminati; se- 

 pala 1 — 1 72'" longa, ovalia v. ovali-rotundata, concava, 5nervia, sicca ni- 

 gricantia, er' stamina includentia, bracteolis minutis obtusiusculis ; sta- 

 mina aequalia, anthera grandi utrinque subemarginata; ovarium in ? mi- 

 nutum , angulato-trapezoideum; bacca succosa, 3'" diam. , sicca nigri- 

 cans. — T. : in pampa pr. Tusca. 



143. A. praecox Gr. n. sp. fruticosus, erectus, inermis , foliis 

 serotinis glabris ellipticis acutis in petiolum attenuatis, racemis simplicibus, 

 ? praecocibus 5 — 6floris solitariis v. fasciculatis, coaetaneis 7 — 2floris, 

 bracteolis minutis ovatis acutis margine membranaceis, staminibus 10 — 15 

 centralibus, testa laevi coriacea. — Frutex 6 — 12pedalis, ramis paten- 

 tibus, cortice cinereo; folia (l — 2" longa, 6'" lata), petiolo V" longo, 

 nodo tenui; racemi er» recurvi. 6'" longi, pedicellis filiformibus 1^2'" 

 longis, bracteolis ^2'" longis, ? longiores, remotiflori; sepala ovali-rotun- 

 data, sicca nigricantia, 1'" longa, stamina subaeqaantia; pedicelli ? vix 

 1'" longi; bacca ellipsoidea, 3'" longa, calycem plus duplo excedens. 



