, 
NEOMAMMILLARIA. 79 
Type locality: Not cited. “ 
Distribution: Central Mexico. 
This plant is very common in central Mexico, especially in the Valley of Mexico, 
. about Tula, farther north, and also east of the City of Mexico. It makes large cespitose 
mounds, sometimes with many-headed branches, and has peculiar incurved spines and 
small flowers. It is frequently collected and has been shipped abundantly to Europe, 
where it has been much named, often from single joints. Our synonymy shows 34 specific 
names under Mammiullaria and nearly as many under Cactus. Some writers have given 
: these names varietal rank, so that this species now has about 100 names. It is a very 
characteristic plant and, while it may easily be confused with other species, yet, when 
i clearly understood, its distinctness is evident. 
Mammillaria zooderi was referred by Schumann (Gesamtb. Kakteen 582. 1898) as a 
synonym of M. centricirrha but the Index Kewensis Suppl. 5. cites Schelle (Handb. 
| Kakteenk. 268. 1907), who gives it as a synonym of M. centricirrha zooderi. Neither the 
specific nor the varietal name can be considered published. . 
Schelle (Handb. Kakteenk. 266 to 268. 1907) lists 62 varietal names of Mammillaria 
centricirrha, all but one or two of which are based on species of the same name. Some of 
these perhaps are to be referred elsewhere, but we have listed them here as follows: 
amoena falcata lactescens posteriana 
arietina foersteri lehmannii pulchra 
bockii gebweileriana longispina recurva 
boucheana gladiata macracantha schiedeana 
ceratophora glauca magnimamma schmidtii 
cirrhosa globosa megacantha spinosior 
conopsea grandidens microceras subcurvata 
cristata guilleminiana montsii tetracantha 
deflexispina hopfferiana moritziana uberimamma 
destorum hystrix neumanniana valida 
de tampico hystrix grandicornis nordmannii versicolor 
diacantha hystrix longispina obconella viridis | 
diadema _ jorderi pachythele zooderi — 
divaricata krameri pazzanil zuccariniana 
divergens krameri longispina pentacantha 
} ehrenbergii krausei polygona 
| The following garden names are listed by Schumann (Gesamtb. Kakteen 582. 1898) as 
belonging to this species: 
boucheana hystrix moritziana_ tetracantha 
destorum jorderi nordmannii viridis 
de tampico lehmannii obconella zooderi 
grandicornis longispina posteriana 
grandidens montsii spinosior 
: Illustrations: Hort: Belge 5: pl. 6, as Mammillaria conopsea; Reiche, Elem. Bot. f. 
: 166, as M. centricirrha. Schelle’s figure (Handb. Kakteenk. 268. f. 189) we are not able to 
place. ‘The illustration in Bliihende Kakteen (1: pl. 32) as M. centricirrha var. does not 
seem to be of this relationship. 
Plate x1, figure 1, shows a small potted plant which fl 
Garden, May 6, 1913. Figure 71 is froma photograph of a plant.obta 
| near San Angel, Valley of Mexico, by O. Solis in rgr9. 
h flowered in the New York Botanical 
ined on the pedregal 
> 14. Neomammillaria macracantha (De Candolle). . a 
- Mammillaria macracantha De Candolle, Mém. Mus. Hist. Nat. Paris 17: 113. 
Cactus macracanthus Kuntze, Rev. Gen. Pl. 1: 260. 1891. 
| Cactus alternatus Coulter, Contr. U. S. Nat. Herb. 3: 95. 1894. 
Mamamillaria centricirrha macracantha Schumann, Gesamtb. Kakteen 582. 1898. 
1828. 
i in di - axils of old tubercles naked, of 
Depressed-globose, 2 to 3 cm. high, 6 to 15 cm. in diameter; ax! 
young ones densely Janate; tubercles ovoid, somewhat 4-sided; young spine-areoles somewhat 
tomentose; spines 1 or 2, somewhat angled, elongated, the longest 5 cm. long (but not elongate 
