tJOTANICAL EErORT. 



437 



EcniNOCACTUs Siiir.soNi (spec, mv*) simplex, subglobosus sen (Icprcssiis, basi 

 tnrbiiuitnS; mamilliferiis; radu-ibiis fasclculntis; tuberculis laxis ovatis apice oblique 

 truncatis axilla nndis, jiinioribiis leviter conipressis l)asi deorsiini pvodiictis, vetustiori- 

 biis obcomm-essis basi dilatatis: areolis ovatis seu ovato-lanceolatis, iiascentibiis albo- 



latis: aculeis extcrioribus sub 



o 



albidis, additis supra aculeis 2-5 sctaccis brcvibus, iuterioribus 8-10 robustioribus 



cire 



curis erecto-patulis, areola florifcra sub tuborculi apice : 

 ulari: floribus in A^ertice dissltis minoribus; ovario abl 



(1-3) iustructo; sepalis tubi brevislate infundibuliformis 



embraiiaceo-maro-inatis crennlatis fimbriatis, sepal 



bus 10-12 ovatis obtu 



cuspid 



ex virescente roseis; stigmatlbus 5-7 brovibus erectis, bacca parva virldi sicca umbilico 

 iRtr^.^Imotrnnnntfi, snnamis Daucis subinde aculeiferls instnicta ilore iiiarcescente deiiuini 



O 



deoiduo coronata irregulariter basi seu latere deliiscente; seniiHll)US m: 



obliquis minute tuberculatis, liilo mag-no ovato subbasilari, cmbryone circa albumen 



parcum fere circumvoluto Iiamato. 



Var. y9 minor: tota planta, tuberculis, aculeis, floribus scuiiuibusque minoribus. 



Butte Valley in tbe Utali Desei-t, aud K<.be Valley farther west; fl. iu April and 

 May, fr. in June and July. Var. /? comes from tbe nu.untabis of Colorado. This 

 and the New 3Iexican F.cMnocadus pnpijracnnthus,] the ^lexican Ech. liornpUufi, T.em., 

 and perhaps the South American Ed). Odkr'il, Lem., and FaIl Cunnrnfff/ii, Salm, aud 

 probably one ur two others, form the small group of EchbmrnrH, with the appearance 

 of IlamiJIaria (Thchidei, tnlcrcnlls spiraJitcr cUspositis distirufis, Salm, Cact. Hurt. 



34). 1 



d 



lion to MamiUaria subgen. Coryphdnllia, Synops. Cact., p. 8, wlilch bear the flowers 

 in the axils of the nascent tubcrcides, the flower-bearing and tlie spine-bearing areolae 

 being connected by a woolly groove. In M. macromeris, Engelmaun, they come from 

 the middle of the tubercule (Cact. Slex. Boundary, t. 15, f 4), and in the TMoldcl 

 they advance to the top of the tubercule close to the spines, thus assuming the position 



the flowers regularly occupy in the genus Edthiocadns (see Cact. Mex. Bound, t. 



whiel 



f 



2)4 



ak 



feAv scales, like that of M. macromims. On tlie other hand, the dry fruit, such as Js 

 often found in F.chinocactuSy but never in MamiUaria, the tuberculated Llack seeds, and 

 esi^ecially the large and curved embryo, and the presence of an albumen, do not 



permit a separation from Ecliinocadus. 



Tliis snecies is furtlier interestin^r because It again strikingly i)roves that the 



* An extract of this floscription was x>nl>lisl!f(l in the Transactions of the Saitit Louis Acaaemy of Sciences, vol* 

 2, p. 107 (IHC3), 



tTbc plaiit I formerly descriLed as AJammana 2>apyracnvfhnj Plant. Fend!., p. 49; Synops. Cact, p. 8, proves to 

 belong to this section of HchlnocacUts. A closer examination of Mr. Fendler's original specimen shows that the floral 

 areola joins the spiniferons one at the apex of the small nascent tuhercules. Thus far Mr. Fendler's specimen, found 

 near Santa F6, has remained the only one ever obtained of this pretty species. 



tEcMnocaclus hrevihamaiua, Eiigelm., forms an exception. In this species, the flowers are sitnated exactly as in 

 Conjphaniha, at the ba.se of the tnbercle, and connected with the distinct spiniferons areola by a woolly groove, (see 

 Cact. Mex. Bonud. t, 19, fs. 2 and 3). 



