41 



Cacti.— Orcutt. 



4* 



scarlet, tubular, slender, somewhat cur\-- 

 ea, anu ob ique with spreading, unequal, 

 petaioid sepals, so making thei flower ap- 

 parently double as In Cereus fiagelliform- 

 is. Stamens and style red, exserted. 



I^AMMILLARIA HALEI Brandegee. 



"CaesDitose, stems 8-10, about a foot 

 high, 2-3 inches in diameter, straight, cov- 

 ered with dark-colored straight spines; tu- 

 bercles short, rounded, woolly in the ax- 

 ils; spines 15-25, y^ 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, petaioid; antlhers scarlet, fila- 

 ments exserted, yellowish, stigma scarlet: 

 fruit red, clavate, y^. inch long; seeds 

 smooth. A handsome species, seen only 

 upon Magdalena and Santa Ma«-garita Is- 

 lands, where it is very abundant."— Bran- 

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



MAMMILLARIA PONDII Greene. 



"From a few inches to a foot high, sim- 

 ple cr with a few oval o.- cylindrlcally 

 elor gated branches; gi owing parts to- 

 mentose: radial spines 20-30, white, slen- 

 der; central 4 or 5, the longest more than 

 an inch in length, rigid and strongly 

 book d. ca k brow.i aoove the midd'e: 

 flowers nearly 2i inches long, bright scar- 



1 t. Near M. Goodii'gii, and differing 

 from it In its laige size and brilliantly 

 ctored large flowers. The plants were 



n flower m i-'ebruary. The species comes 

 f. om the southwestern part of Cedros 

 Island."— Greene Piitoria 1:268 (20 Mr 

 1S89). 



>- ruit 20 rrm long, 10 m In greater diam- 

 eter, greenish, tase imbedded in wool, re- 

 mnins of flower persistent, pulp slightlv 

 acid, greenish (May 6, 1897): seeds 0.5 mm 

 in d'ameter. 



MAMMILi^ARIA ROSEANA Bndg. 



"Stems numerous from the root, 

 spreading, curved, ascending, one-third to 



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

 range! ia Qulncunxial order, 15 mm apart, 

 cyllndJical, 12 mm long, white-woolly In 

 the "pper axils: pulvlnae finely pubscent; 

 rar lal .'-'-ines -9 in number, P-12 mm long, 

 brown o straw colo ed. the single cen- 

 tral spine 25 mm long, curved, hooked at 

 the tip; flowers from the axils of the up- 

 per '^ami lae. 3 -mi long- sepals and pet- 

 a's b:i ht sc rle , j Ir.ed into a tube, 

 spreading at thdr tirs. in se^-eral series; 

 stamens ard style scarlet; style branches 

 5-7: fruit scarlet, pyriform 6-8 mm long; 

 seedis blark, p'tted; citylelons united, 

 only a depressed line at their tips; albu- 

 men none.— Throughoit the lower eleva- 

 tions rf th<^ Ca'-'e Region and northward 

 to CalmaMi. Th's cactus is ore of the 

 m'ist sh wv of Lower Ca Iforna, Dr. 

 T'almer rollected it at La Paz and it is 

 No. 139 of the list from that place in 

 Contr. T'. g. Herb. No. 3 .catalogued by 

 Mr. rose, for whom it is appropriately 

 named. The stems pendent from rocks 

 at Comordu are sometimes 6 feet long. 

 •This species and M Halei of Magdalena 

 and Fanta Margarita Islands have simi- 

 lar f owers, fniit and seeds. The seeds nf 

 M. Hnlel wfre wrongly described as 

 smooth; they are nitted in the !=ame man- 

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

 (Ap 1891). 



MAWM LLARIA SENILIS Lodd. 



Stem columnar, '2 dm high, 5 cm diameter, 

 D'olii'erous at buse in age, ax lis naked, brilliant 

 green; areil s tomeutose, tomentum & spues 

 wtiite; radials very numerous, flexible, crini- 

 form, 4-6c"iitrHls stronger, the upper hooked. 

 •'GiQwson ptalms, Han Luis Potosl." 

 Variety HASSELOFH S [M hasselofii Eh]. 



^pine8 more numerous, all criniform. 



Varety LINKEI S [M linkei Ehl. 

 Ceuiral spines all hooked. 



MAMMILLARIA SETISPINA E. 



"Cactus setispinus: fasciculate and as- 

 cenoing, simple or branched at base, the 

 stems at out '^^ cm big*" and 3-6 cm in di- 

 ameter, densely covered with remarkably 

 long stout SMiues: luoercles sl^ort and 

 broadly conial, ^^ i h axil'.ary wool: 

 spines white, with black tips; radials 10- 

 12, wide y spreading, very unequal, 10-34 

 mm long, slender and flexuous; central 

 spines 1-4, more rig d and much longer 

 (zO 5 mm), the u. per ones straight, tl*o 

 lowest one ongest ard hooked (usually 

 upwards) and oftei variously curved and 

 twisted: fru t obovate and scarlet, 30 mm 

 long: feeds black and pitted. Type, Gabb 

 15 in Herb. Mo. Bot Card. Rocky or 

 gravelly soi', San Julio canyon, and in 

 the vicinity of San Borgia, Lower Cali- 

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

 (10 Je 1894). 



Subgenus CORYPHANTHA. Plants 

 globose or elongated, often robust, with 

 watery ju:ce. Tubercles (in age) grooved 

 on the upper side. Flowers as in Eumam- 

 illaria. but some at the extremity of the 

 groove in the axils of yourg tubercles, 

 usually near the vertex of the plant. 



MAMMILLARIA ALVERSONI Hort. 



The Fox-tail cactus is of robust 

 branching habit, densely covered with 

 long stout straight spines, usually tip- 

 ped with black or black half way down, 

 shading into red, but often pure ivory 

 white throughout. The large rose pur- 

 ple flowers 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 radlosa. 

 MAMMILLARIA ARIZONICA Engelm. 



See radiosa 



MAMMILLARIA COMPACTA E, 



I»epresS"d-.elnbo,'ie, 5-10 cm diam, simple; tii- 

 l)prcles short-conical, rrowded, 8 mm long; ra- 

 dials l.'J-lfi, risrld, repvirved * anpre'Sed, inter- 

 woven with adjacent clusters, whitish or horny, 

 l0-2'>mm long: central eroct, often wanting; 

 fls 3-3 5 f m lon.ff and broad. yfUow; fruit oval, 

 green; ^ee(is 1.4 mm long, smooth, yellow. Chl- 

 huahtia. 

 MAMMILLARIA CONOIDEA P DC. 



Ovate-conical, simple, 3..^-10 cm high,4-7 in 

 diameter below with densely woolly vertex; 

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

 woolly; radials 10-16, ashy to white, straight, 

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



