dolichothelE. 63 



MatnmiUaria melaleuca Karwinsky in Salm-Dyck, Cact. Hort. Dyck. 1849. 108. 1850. 



Mammillaria globosa Link, Allg. Gartenz. 25: 240. 1857. 



Manunillaria uberiformis gracilior Meinshausen, Wochenschr. Gartn. Pflanz. i: 26. 1858. 



Mammillaria longimamma luteola Hortus in Forster, Handb. Cact. ed. 2. 246. 1885. 



Cactus longimamma Kuntze, Rev. Gen. PI. i: 260. 1891. 



Cactus melaleucus Kuntze, Rev. Gen. PI. i: 260. 1891. 



Mammillaria longimamma globosa Schumann, Gesamtb. Kakteen 508. 1898. 



Solitary or cespitose, about 10 cm. high; tubercles elongated, 5 cm. long, somewhat glaucous, 

 their axils hairy or naked; spine-areoles with white hairs when young, in age naked; radial spines 

 6 to 12, widely spreading, acicular, 2.5 mm. long, white to pale yellow, swollen and darker at base, 

 puberulent; central spines i to 3, usually solitary, porrect, similar to the radials but usually darker 

 with a blackish tip ; flowers citron-yellow, 4 to 6 cm. long. 



Type locality: Mexico. 



Distribution: Central Mexico. 



F. Haage jr. in his Choice Cacti lists ten varieties under this species; those not 

 accounted for elsewhere are ludwigii and melaleuca. 



Grassner in his Kakteen 191 2 and also 19 14 listed Mammillaria longimamma var. 

 ludwigii. This may be a. printer's error. 



Mammillaria longimamma melaleuca is in the trade (Grassner). Mammillaria longi- 

 mamma pseudo-melaleuca is advertised by Haage and Schmidt in their 1922 Catalogue. 



Mammillaria longimamma spinosior (Wochenschr. Gartn. Pflanz. i: 26. 1858), credited 

 o Link's Catalogue, but without description, is of this relationship. 



Mammillaria liexacentra Otto and Mammillaria gigantothele (Forster, Handb. Cact. 

 183. 1846) were never described. 



Krook (Handb. Cact. 41. 1855) mentions the variety congesta Hortus but gives no 

 description. Several varieties of Mammillaria longimamma are in gardens; the following 

 are mentioned by Schelle: cristata, compacta (the name cited by Riimpler in 1885), major, 

 laeta, and malaena. 



Mammillaria centricirrha flaviflora is referred by Schumann as a synonym of M. 

 melaleuca which we have listed among the synonyms of Dolichothele longimamma. M. alpina 

 Martins, mentioned elsewhere, may be of this relationship. 



Illustrations: Monatsschr. Kakteenk. 29: 81, as Mammillaria longimamma globosa; 

 Mollers Deutsche Gart. Zeit. 25: 475. f. 8, No. 23, as M. longimamma gigantothele ;Blnhende 

 Kakteen 2: pi. 73; De Candolle, Mem. Cact. pi. 5; Schumann, Gesamtb. Kakteen 792. f. 

 114; Monatsschr. Kakteenk. 8: 149; Schelle, Handb. Kakteenk. 244. f. 162; Forster, Handb. 

 Cact. ed. 2. f. 22, a and b; Ann. Rep. Smiths. Inst. 1908: pi. 14, f. 2; Watson, Cact. Cult. 

 164. f. 63; ed. 3. f. 40; Diet. Gard. Nicholson 4: 564. f. 35; Suppl. 516. f. 551 ; De Laet, Cat. 

 Gen. f. 89, as Mammillaria longimamma. 



Figure 61 is from a photograph obtained from L. Quehl; figure 59 is from a photograph 

 of the plant collected by Dr. B. Palmer near Victoria, Mexico, in 1907. 



3. Dolichothele uberiformis (Zuccarini). 



Mammillaria uberiformis Zuccarini in PfeifFer, Enum. Cact. 23. 1837. 



Mammillaria uberiformis major Hortus in Forster, Handb. Cact. ed. 2. 244. 1885. 



Mammillaria uberiformis variegata Hortus in Forster, Handb. Cact. ed. 2. 244. 1885. 



Mammillaria laeta Riimpler in Forster, Handb. Cact. ed. 2. 247. 1885. 



Cactus uberiformis Kuntze, Rev. Gen. PI. i: 261. 1891. 



Mammillaria longimamma uberiformis Schumann, Gesamtb. Kakteen 508. 1898. 



Globose, about 7.5 cm. high and 10 cm. in diameter; tubercles elongated, 2.5 to 3 cm. long, 12 

 to 15 mm. in diameter, bright green, shining, their axils naked; spine-areoles nearly naked; spines 

 4 or 5, all radial, puberulent, horn-colored to reddish, nearly equal; flowers yellow, 3 cm. broad; 

 outer perianth-segments reddish; inner perianth-segments in 2 series, oblong, acute, acuminate; 

 filaments white; style yellow; stigma-lobes 5 or 6, reflexed. 



Type locality: Near Pachuca, Mexico. 

 Distribution: Central Mexico. 



