673 



MALVASTRUM ROTUNDIFOLITJM A.Q. 

 G 8:333 (1868). B 1:85. CD (Parish). A 

 1:287 d. 



Type locality: "sand hills at Fort Mo- 

 have," Ar. 



Malveopsis rotundifolia OK 1:72 (1891). 

 Cov 74. 



MALVASTRUM SPLENDIDUM Kell. 

 K 1:65. Cur 1:133. A l:29d. B 1:85, 2:437. 

 Ab 249 as fasciculatum. 

 MALVASTRUM THURBERI A. Gray. 

 PI Thurb 307. B 1:85. Par 226 t. A 1: 

 28d. Ab 249 as fasciculatum. SBar, 

 Baja! Son, Cat. 



Variety X.AXIFX.ORUM G 22:291. Greene, 

 Cal ac b 2:392 Cruz, "only 2 bushes 

 seen." 



M. TBICTJSPIDATUM G, PI Wright 

 1:16. Baja (Brj. 



MAMMILLARIA. A genus of more 

 than 300 species of strangely curious 

 and beautiful plants, mostly natives of 

 Mexico. 



"Flowers about as long as wide; the 

 tube campanulate or funnel-shaped. Ova- 

 ry often hidden between the ba<es of the 

 berry, naked. Seeds yellowish- brown to 

 black, exalbuminous or nearly so. Em- 

 bryo mostly short and straight, with ex- 

 tremely short cotyledons parallel to the 

 sides of the seed. Small, more or less 

 globose or oval simple or caespitose 

 plants, the spine-bearing areolae borne on 

 cylindric, oval, conic or angular tubercles, 

 which cover the body of the plant. Flow- 

 ers form a distinct woolly or bristly areo- 

 la at the base of these tubercles, fully 

 open in sunlight, mostly only for a few 

 hours." E. 



Submenus EUMAMMILLARIA. Plants 

 globose or elongated, with watery juice, 

 and cylindrical or conical grooveless tu- 

 bercles. Flowers borne usually in a 

 ring near the top of plant, cup- 

 shaped or expanded, as broad or broader 

 than long. Sepals appressed. Stamens 

 and styles shorter than the corolla. 



Subgenus COCHEMIEA. Plants cylin- 

 drical, usually much elongated with wa- 

 tery juice and grooveless tubercles. Flow- 

 ers mostly in a ring near the vertex 

 several times longer than broad, scarlet, 

 tubular, slender, somewhat curved, and 

 oblique with spreading, unequal, petaloid 

 sepals, so making the flower apparently 

 double as in Cereus flagelliformis. Sta- 

 mens and btvle red. exserted. 



Subgenus CORYPHANTHA. Plants 

 globose or elongated, often robust, with 

 watery juice. Tubercles (in age) grooved 

 on the upper side. Flowers as in Eximam- 

 millaria, but some at the extremity of 

 the groove in the axils of young tuber 

 cles, usually near the vertex of the plant. 



Section GLANDULIFERAE. Cylindric- 

 al; mammae cylindrical, long, or oval 

 and more or less globose; groove^ bear- 

 ing more less conspicuous glands, the 

 grooves often absent in young plants, the 

 glands sometimes in the axils or at the 

 base of the tubercles. 



Subgenus LACTESCENTES. Plants de- 

 pressed-globose, rarely a little elongated; 

 juice milky; tubercles usually angular 



174 



and somewhat leathery. Flowers as in 

 Eumammillaria, but mostly small. 



MAMMILLARIA ALVERSONI Hort. 



The Fox-tail cactus is of robust 

 branching habit, densely covered with 

 long stout straight spines, usually tip- 

 pe 1 Tvith b-ack 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. 

 M. AEIZONICA E, B 1:244. 

 MAMMILLARIA ARMILLATA K Br. 



"Stems somewhat attenuate, reaching 

 3 dm in height, 4-5 cm in diameter, usu- 

 ally in clusters of 3-12, from the base of- 

 ten branching above; tubercles somewhat 

 leathery in texture; conical, somewhat 

 angled; axils setose and sparsely woolly; 

 radial spines 9-15, 7-12 mm long, the in- 

 ner half whitish or grayish; centrals 1-4, 

 10-20 mm long, the lower one hooked and 

 longer, all, and the outer part of the 

 radials dark brown, yellowish or gray; 

 flowers 1-2 cm long, scarcely spreading, 

 flesh color; fruit red, clavate, 1^-3 cm 

 long; seeds coriaceous, dull black, about 

 1 mm long, obliquely obovate, constrict- 

 ed above the more slender basal portion; 

 surface covered with minute, not closely 

 contiguous pits, the intervening spaces 

 minutely wrinkled; hilum basal, narrow. 

 San Jose del Cabo, Baja California, The 

 name is in allusion to the dark bands 

 which encircle the plant, giving it much 

 the appearance of a raccoon's tail." 

 Katharine Brandegee, Zoe. 5-7 (Je 1900). 



M. dioca Katharine Brandegee, Ery- 

 thea 5:115-6 (24 N 1897): "M. Good- 

 richii of Engelmann, not of Scheer. 

 Simple or caespitose, or occasionally 

 branching- above; beginning to flower 

 at one inch or less, but attaining a 

 height of 6-10 inches. Tubercles 

 green or sometimes glaucous, cylin- 

 drical, often angular; axillae sparsely 

 woolly in the growing part, bearing- 

 4-15 setae, often as long as the tu- 

 bercle; outer spines usually white, 

 radiant, 11-22, covering- the whole 

 plant, centrals 1-4, the superior turned 

 upward among the radials, the lowest 

 longer and stouter and porrect, 8-15 

 mm. long: flowers 10-22 mm. long, 

 yellowish-white, sometimes reddish, 

 incompletely dioecious; petals lanceo- 

 late-acuminate, much longer and more 

 spreading in the male flowers; fruit, 

 like the flowers, borne in a circle near 

 the top, clavate or oval, scarlet, 10-25 

 mm. long; seeds as in most of the 



