STANDLEY TREES AND SHRUBS OF MEXICO. 1009 



134. Neomammillaria verhaertiana (Bodeker) Britt. & Rose, Cactaceae 4: 

 164. 1923. 



Mammillaria verhaertiana Bodeker, Monatsschr. Kakteenk. 22: 152. 1912. 



Mexico. 



Solitary, sliort-cylindric ; tubercles subconic, their axils setose; radial spines 

 20 or more, yellowish, setaceous, 1 cm. long, glabrous; central spines 4 to 8, 

 stouter than the radials, brown at tip, one of them hooked at apex ; flowers 

 white, 2 cm. long, appearing in a circle below the top of the plant ; outer peri- 

 anth segments broadly lanceolate, yellowish white. 



Besides the species formally listed here, there remain numerous others pub- 

 lished under the generic name Mammillaria, but they have been so poorly de- 

 scribed that their identity is likely to remain unsolved. 



51. EPIPHYLLTJM Haw. Syn. PI. Succ. 197. 1812. 



Plants mostly epiphytic, the main stem often terete and woody; branches 

 usually much flattened, often thin and leaflike, sometimes 3-winged ; areoles 

 small, borne along the margins of the flattened branches ; spines usually want- 

 ing in mature plants but often i-epresented in seedlings and juvenile forms by 

 slender bristles; flowers usually large, in some species nocturnal, in others 

 diurnal, either odorless or very fragrant ; flower tube longer than the limb, in 

 some species greatly elongate; filaments usually long, borne at the top of the 

 tube or scattered over the surface of the throat ; style elongate, white or col- 

 ored; stigma lobes several, linear; fruit globular or short-oblong to narrowly 

 oblong, often with low ridges, sometimes tubercled, red or purple, edible or 

 insipid, when mature splitting down one side and exposing the white or crimson 

 pulpy interior ; seeds black, shining. 



Several species besides those listed here occur in tropical America. 



Ultimate joints acuminate.. 



Flowers 2.5 to 30 cm. long 1. E. oxypetalum. 



Flowers 10 to 15 cm. long 2. E. caudatum. 



Ultimate joints acute, obtuse, or rounded. 

 Joints deeply lobed. 



Lob^s of joints spreading; outer perianth segments lemon-yellow. 



3. E. darrahii. 

 Lobes of joints pointing forward ; outer perianth segments reddish yellow. 



I 4. E. anguliger. 



Joints crenate or nearly entire. 



Joints very stiff 5. E. strictum. 



Joints flexible 6. E. stenopetalum. 



1. Epiphyllum oxypetalum (DC.) Haw. Phil. Mag. 6: 109. 1829. 



Cereus oxypetalus DC. Prodr. 3: 470. 1828. 



Cereus latifrons Pfeiff. Enum. Cact. 125. 1837. 



PhyUocactns oxypetalus Link; Walp. Repert. Bot. 2: 341. 1843. 



PhyUocactus latifrons Link; Walp. Repert. Bot. 2: 341. 1843. 



Pliyllocactus purpusii Weing. Monatsschr. Kakteenk. 17: 34. 1907. 



Mexico, often cultivated. Central America to Brazil. 



Plants stout, 3 meters long or more, much branched ; branches flat and 

 thin, 10 to 12 cm. broad, long-acuminate, deeply crenate ; flowers opening in 

 the evening, drooping and limp after anthesis, fragrant ; tube of flower 13 

 to 15 cm. long, rather stout, red, about 1 cm. thick, bearing distant nar- 



