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Plate 2429. 



ARRACACIA ? FILIFORMIS, Coult. & Hose. 



Umbellifer.e. Tribe Ammine.i;. 



A. ? filiformis, Coulter <k Rose (sp. nov,) ; herba acaulescens 

 glaberrima, foliis longe et gracilitcr petiolatis bi- tri-ternatipartitis 

 segmentis angustissime linearlbus aeutis integris v. apicem versus 

 ssepe 2-3-clentatis, scapo erecto folia nonnunquam superante, radiis 

 rigidis adscendentibus in?equilongis exinvolucratis, involucellorum 

 bracteis ssepius ternis anguste linearibus integris dentatis v. tritidis 

 floribus multo longioribus, pedicellis brevibus fructui sub?equilongis, 

 cremocarpiis ovato-oblongis lateraliter leviter compressis mericarpiis 

 purpurascentibus jugis 5 prominulis stramineis, vittis stepius ad sulcos 

 solitariis, seminibus subteretibus facie sulcatis dorso laivibus. — Contrib, 

 U.:S. KaL Herb. iii. 296. 



Hab. Mexico ; Sierra de San Pelipe, Oaxaca, on rocky ridges, 



10,500 ft alt., PrhigU (No. 4714)- at 9500-11,000 ft., Nelson 



(No. 1088) ; summit of Mt. Zempoaltepec, alt 11,400 ft, Nehon 

 (No. 621). F i' . 



Folia^ cum petiolo, 4-9 poll, longa. Scapus 2|-7 poll, longus ; radii 

 longiores 1-2^ poll, longi. Flores atro-purpiirascentes. Bractem 

 involucellorum 6-9 lin. longiie. Frncttis 1^-2 lin. longus ; carpophorum 

 bipartitum ; stylopodia conica.— J. N, Rose. 



Whatever may be finally determined as to the limitation of the 

 genus Arracacia, this plant, of which excellent specimens, together 

 with a description, have been placed at our disposal for the Iconics 

 Plantarum by Mr. S. P. Langley, Secretary of the Smithsonian Insti- 

 tution, through Dr. Rose, of the U.S. National Herbarium, Washin 

 would seem to be clearly a congener of A. mariana, S. Wats, in a. s^^. 

 Ainer. Acad, xxvi, 136.— D. Oliver. 



Fig. 1, Male flower. 2. Petal, 3. Perfect flower, petals and stamens fallen. 

 4. Cremocarp, showing carpophore, 5. Commissural face of a mericarp, 6. Transverse 

 section of mericarp. All enlarged. 



