<-n the lower outer tubercles of young 

 plants: fruit scarlet, clavate, with small 

 seeds. Type, Orcutt, No. 2602: Of snowy 

 whiteness from its numerous interlacing 

 spines; dedicated to the author's life part- 

 ner, who has accompanied him in thought 

 on the mountains and deserts of Arizona, 

 where this beautiful plant occurs. 



niillaria petrophila. 



Katharine Brandegee, Zoe 5:193 



1905), describes this as follows: 



, 

 'Lactescent, attaining a height and 



dianioter of 15 cm. but ordinarily a 



i - mhprrlf^ .short with 



1 

 areolae soon naked; 



3 chestnut color, becoming paler 



-- >-adial 10 -bout 1 cm lone- 

 .m. long, 



sometimes -2. stronger, 



darker, and nearly twice as long-, all 



t spreading axils densely 



ae base of the plant 



unusually large and long tuft, 



-.ivous v.-ooi in which the fruits 



are nearly hidden: tiowers bright 



o-i^/-.v,i~v. wUnv M*:tViir> QTIH witvimit 



out ' 

 abruptly expanded above the ovary, 



mm. long; petals and sepals 



hardly acute, lightly er: stamens 



6-parted stigma the same color 



tire flower; berrv -mall, round- 



, 

 ish, color not noted; seeds reddish, 



h. less than 1 mm. in length- 



Ted by Mr. T. S. Brandegee in 



erra de la Lasuna. and Sierra San 



FranciSQUito in September and Oc- 



tobr, 1899. and later in the same 



E B IM*' 



hi. r> l:Z44. 



M. PONDII P 1:268 Cedros. 

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



678 



10 in diameter, often bifurcate; tubercles 

 conical, 12 mm long, 8 in diameter; with 

 woolly axils; radial spines 16-20, bristle- 

 like, white, the lower &-10 mm long; cen- 

 tral spines 6 or 7, rigid, whitish with black 

 tip, 12 mm long: flowers rose-color, 12 mm 

 broad; i'ruit 2.5 cm long, cylindrical. Mex- 

 1C - 



"Stems mfme^ouVSrom the root, 

 spreading, curved, ascending, one-third to 

 2 mm , . ion S-. 4 cm . thick; mammae ar- 

 ranged in qumcunxial order, 15 mm apart 

 cylindrical. 12 mm long, white-woolly in 

 the upper axils; pulvinae finely pubscent; 

 radial spines 7-9 in number, 9-12 mm long, 

 brown o. straw colored, the singie cen- 

 tral spine 2.5 mm long, curved, hooked at 

 the tip; flowers from the axils of the up- 

 per mami lae - 3 cm on & : sepals and pet- 

 a , s bright scarle , jri.ied into a tube, 

 spreading at their tips, in several series; 

 stamens and style scarlet; style branches 



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

 der; central 4 or *. the longest more than 

 an inch in length, rigid and strongly 

 hooked, dark brown above the middle: 

 flowers nearly 2 inches long, bright scar- 

 let. Near M. Goodrtdgii. and differing 

 from it in its large size and brilliantly 

 colored large flowers. The plants were 

 in flower in February. The species comes 

 from the southwestern part of Cedros 

 Island."-Greene Pittorla 1:268 (20 Mr 



Fruit 20 mm long, 10 m in greater diam- 

 eter, greenish, base imbedded in wool, re- 



in diameter. 



e. pub- 



this name (based on Cactus Prin- 

 gle- Coulter) and states that it seems to 

 scarcely differ from M. Carretii. 

 MAMMILLARIA RHODANTHA L-O. 



or subcylindric. 30 cm high, 7.5- 



only a depressed line at their tips; albu- 



t o Calmalli. Th s cactus is ore of the 

 m^st sh-iwy of Lower California, Dr. 

 Palmer collected it at La Paz and it is 

 No. l?o of the list from that place in 

 Contr. U. S. Herb. No. 3 .catalogued by 

 Mr. Rose, for whom it is appropriately 



g^Ljfr SMfiff /R S 



This species and M Halei of Magdalena 

 and Santa Margarita Islands have simi- 

 lar flowers, fruit and seeds. The seeds of 

 M Halei were wrongly described as 

 smooth ; they are pitted in the same man- 

 n|ra^those of this species."-Br Zee 2:19 



; ^ U , asii pfeiffer AQZ 1838:274 . 



proliferous 

 specimen found a y the 5QO lants 



examined), globose to rarely cylindri- 



10- t. i_-t.i jji 



cal - 3 inches in height and diameter 

 (maximum height and diameter ob- 



serve a . a " a 4 in< ? e i ): . ^ uber ? les 



terete, bright green, half inch or less 

 long, enlarged at base, axils woolly; 



a-^ioo tnmemtnP- raHial cninA 3f 

 areolae 



one-fourth inch long, white, radiant; 

 centrals 5. and 2 upper equalling the 

 ,.,,, 11 j, 1<5 ; n i pn p-th thp *> middle onp<? 

 radl on <~ s 



laterally divergent, slightly longer, the 

 ] Owest half an inch long, dark brown. 

 hooked upward: fruit clavate, scarlet. 

 half an inch long, one fourth inch in 

 diameter: seeds large, black, 11 in one 

 fruit. Bisr.agre of 'the natives; valued 

 by them for its medicinal properties. 

 Flower, rosy white to bright red. (20) 



MAMMILLARIA SENILIS Lodd. 



Rose, Oontr U S Xa Hb o: 2o8 1 

 "This seems to be the 'hikora rosapara' 

 of whir*h Lumhaltz writes: 'Rosapara is 

 a white ?nd spiny hikora. 



