41 



Cacti.— Ore utt. 



4a 



scarkt, tubular, slerder, somewhat curv'- 

 ea, 0.11(1 ob i^iue with spreainng, unequal, 

 peta;oid sepals, so making the flowc-r ap- 

 parently double as in cereus tlageiiiform- 

 is. Stamens and style red, exserted. 



I.:.T.:>riLLARIA HALEI Brandegee. 



>.^a.s ,ilose, sttms 8-10, about a foot 

 high, r-3 .nches in diameter, straight, cov- 

 eted with dark-coloied hiraight spines; tu- 

 beicles short, rounded, wooUy in the ax- 

 ils; spines 1.5-25, V2 inch long, with 3-4 of 

 the interior ones stouter and an inch long; 

 flowers an inch long, vertical from the ax- 

 ils of young tubercles, scarlet; sepals all 

 scarlet, peialoid; antlhers scarlet, fila- 

 ments exserted, yellowish, stigma scarlet: 

 fruit red, clavate, V2 inch long; seeds 

 i--mcoth. A handsome species, seen only 

 upon -Uagdalena and Santa Ma<-garita Is- 

 lands, wlier^' It is very abundant. "—Bran- 

 degee Cal ac pr sr 2, 2:161, t 6. 



MAMMTLLARIA FOiN'DII Greene. 



"iTom a lew inches to a foot high, sim- 

 p's ir w.th a fe.v oval or cylindrlcaily 

 ' longatel tranches; g. owing parts to- 

 mentose: radial spines 2U-30, white, slen- 

 der; ctntral 4 o:- .i, the longest more than 

 an inch in hngth, rigid and strongly 

 look d. cak brow 1 aoov^E^ the midd e: 

 floweis nearly :: inches long, bright scar- 



1 t. Near M. Good.i'gii. and di f ering 

 from it in its latg^> size and brilliantlv 

 c 1 ored ar.e flowers. Ths plants were 



n flo.ver .n 1 ebruary. Ihe species comes 

 f 0.11 the siuthwt stern part of Ccdros 

 Ji-land."— Greene H.toria 1:268 (20 Mr 

 1SS9). 



i nit 20 rrm Irng, 10 m in greater diam- 

 eter, gree:iish, ) ase imbedded in wool, re- 

 m; ins of flower persistent, pulp slightly 

 aci<l. greenish (May 6, lS9i): seeds 0.5 mm 

 in dameter. 



M.AATMTT.I. '»^TA ROSE.AMA Bndg. 



"Stems numerous Irom the root, 

 spreading, curved, ascending, one-third to 



2 mm 'ong. 4 cm thick; mamillae ar- 

 ranrel i 1 >; -incunxial order. 15 mm apart, 

 c.vlind: ical. li n.m .ong. white-woolly in 

 tie rpp^^r axils: pulvinae finolv pub.-c?nt; 

 rai ial siines ,-9 in number. 9.-12 ir.m long, 

 brow.: O' btrivv coloed, the single cea- 

 iml spine 2'i, mm long, curved, hooked at 

 the tip; flowers from the axils of the up- 

 ])er n-ami lae. 3 m long: sepals and pet- 

 as b-i hi sc rle , ji i ed into a tube, 

 spreading at ihtir tips, in several series; 

 stamens and style scarlet; style branches 

 .^-7: fruit scarlet, pyriform 6-S mm long; 

 seedK black, ptted; c tyleions united, 

 only a d^pr ssed line at their tips; albu- 

 men none. — Throughout the lower eleva- 

 tions of the Cane Region and northw-ard 

 to Calma'li. Th's cactr s is one of the 

 most f h wv' of Lower Ca iforn a. Dr. 

 Calmer collected t at La Paz and it is 

 No. 139 of the list from that place in 

 Contr. T^. S. Herb. No. 3 .catalogued by 

 Mr. Pose, for whom it is appropriately 

 named. The stems pendent from rocks 

 at Comondu are sometimes 6 feet long. 

 This species and M, Halei of Magdalena 

 and Panta Margarita Islands have simi- 

 lar f owers, fruit and seeds. The seeds of 

 M. Halei Wfre wrongly described as 

 smooth; they are pitted in th.> same n;an- 

 ner as those of this species."— Br Zoe 2:19 

 (Ap 1S91). 



MA^'M^LLAPIA SENILIS Lcdd. 



Stem coiiiuinar-, 2 iim high, 5 cm diameter, 

 Ti.oiiiervHi.s at bsise iuage.axijs naked, brilliant 

 };rjeu; aiei.l s toiuentose, tomentum a spues 

 wiiile; raiUals ver.v uuinerous, flexible, ( riui- 

 t.inn, 4-« ('.•Ml tr-ils i-troiiger, the upper hooked, 

 •■(jiousuii palrns,.san l^uis Potosi. ' 

 Variety II A.s.SELOFl I ,S [.M haP^^elofii EhJ. ■ 



.■'pines more numerous, all criuiform. 



Variety LINKEI S [ VI linkei Eh]. 

 Ceu ral .spines all hooi.ed. 



MAMMILl.ARIA SETISPINA E. 



"Cactus setispinus: fascicuiate and as- 

 cen.ing. siir.ple or branched at base, the 

 :ittms aijout i'O cm l.igh and 3 t! cm in di- 

 ame-tr, runsely covered w.th lemarkably 

 long htout s ).nes: tunercles snort and 

 brvadly coni al, vih axliary wool: 

 spines white, with black t.ps; radials 10- 

 12. wide y spreading, very unequal, jO-34: 

 mm long, slender and tlexuous; central 

 spines 1-4, more rig d and much longer 

 (.:0 5 mm), the ui per ones st.aight. the 

 lowest one oigest ard hooked vusually 

 upwards) I'ud often vaiionsly curved and 

 twisted: fru t obo\ ate and scarlet, 10 mm 

 long: ^eeds black and pitted, lype, Gabb 

 15 in Htrb. Mo. Bot Gard. Rocky or 

 graveli.v sol', San Ji.Iio canyon, anJ in 

 the vicinity of fc'an Borgia. Lower Cali- 

 fornia."— Coulter Cont U S Naf Hb 3: 106 

 (iO Je 18i)4). 



?utgenus CORYFHANTHA. Plants 

 globose or elonga'ed. often robust, with 

 watery .iuice. 'Jubercles (in age) grooved 

 on the upper s'de. Flow-rs as in Eumam- 

 illaria. but some at the extremity of the 

 groove in the axils of young tubercles, 

 usually near the vertex of the plant. 



MAMMILLARIA ALVERSONI Hort. 



The Fox-tail cactus is of robust 

 brarc^hing habit, densely covered with 

 Ion.'? siout straij'ht .-opines, usually tip- 

 ped with black or black half way down, 

 shading into red, but often pure ivory 

 white throughout. The large rose pur- 

 ple flow-ers are quite showy. The larg- 

 est of some fifty plants was a cluster 

 of six heads measuring 3 inches in 

 diameter and about 8 inches high. 



See radiosa. 

 MAMMILLARIA ARIZONICA Engelm. 



See radiosa 

 MAMMILLARIA COMPACTA E. 



I>opress->d-fflobose, ."i-lO cm diam, simple; tu- 

 bercles .'shnvt-conieal. crowfieil, 8 mm lonp; ra- 

 dials i;^-H!, ritjid, ref'tirved & Rppre'sed, inter- 

 woven with adjacent el irsters, whitish or horny, 

 ]0-2'> mm lontr: ""entral erect, often wanting; 

 fls 33. 5 ' ni lonar and broad, yellow; fruit oval, 

 green;. -eeds 1.4 mm long, smooth, yellow. Chi- 

 huahua. 

 MAMMILLARiA CONOIDEA P DC. 



Ovate-conical, simple, 3.f>-10 cm hiKb,4-7 in 

 diameter below with densely woolly vertex; 

 tubercles close, ova'e, 12 mm long, axils at first 

 woolly; radials 10-lt;, ashy to white, straight, 

 stout, 6-10 mm long; centrals 3-5, 10-16 mm 



