198 THE CACTACEAE. 
Illustrations: Pfeiffer and Otto, Abbild. Beschr. Cact. 1: pl. 5, as Cereus hookert; 
Curtis’s Bot. Mag. 53: pl. 2692; Loudon, Encycl. Pl. 413. f. 6901, as Cactus phyllanthus; 
Addisonia 5:. pl. 192. . 
Plate x1x shows a flowering branch from a specimen sent by W. E. Broadway from 
the Island of Tobago in 1909. 
- HYBRIDS. 
EPIPHYLLUM ACKERMANNII Haworth, Phil. Mag. 6: 109. 1829. 
Cactus ackermannii Lindley in Edwards’s Bot. Reg. 16: pl. 1331. 1830. .. _ 
Cereus ackermannit Otto in Pfeiffer, Enum. Cact. 123. 1837. Lprrao 670 
Phyllocactus ackermannii Salm-Dyck, Cact. Hort. Dyck. 1841. 38. 1842. ” “* 
Branches weak, flat, and thin with crenate margins; areoles felted, often bristly or with weak 
spines, especially on the young growth; flowers day-blooming, very large, sometimes 1.5 to 2 dm. 
broad, crimson; inner perianth-segments oblong, acute; filaments long, weak, declined; style more 
or less declined, pinkish; stigma-lobes white; ovary more or less bristly. 
Type locality: Mexico. 
Distribution: Mexico. 
This species was originally described as from Mexican plants sent to Haworth from 
Ackermann and, supposedly, from wild plants, but the general belief now is that the plant 
is of hybrid origin. The flowers are so much like those of Heliocereus that this genus 
probably furnished one of its parents (see Botanical Magazine, pl. 3598). 
On the other hand, E. A. Goldman collected in Chiapas a series of specimens which 
seems to represent more than one species, but all the flowers are similar to those of 
Epiphyllum ackermannii and one of the specimens may represent the wild state of that 
species. The plants all have flat joints bearing clusters of spines in their areoles. 
Many garden varieties and artificial hybrids have been obtained from this plant, some 
described under English and others under Latin names. 
Illustrations: Edwards’s Bot. Reg. 16: pl..1331, as Cactus ackermannii; Curtis’s Bot. 
Mag. 64: pl. 3598, as Cereus ackermannii; Blithende Kakteen 1: pl. 49; Cycl. Amer. 
Hort. Bailey 3: f. 1773; Dict. Gard. Nicholson 3: f. 133; Karsten, Deutsche FI. 887. f. 
501, No. 6; ed. 2: 2: 456. f. 605, No. 6; Férster, Handb. Cact. ed. 2. 841. f. 111; Riimpler, 
Sukkulenten 149. f. 81; Watson, Cact. Cult. 47. f. 10; Rother, Praktischer Leitfaden 
Kakteen 97; ed. 3. f. 8; Amer. Gard. 11: pl. opp. 445; Gartenflora 32: 374, as Phyllocactus 
ackermannit; Loudon, Encycl. Pl. 1202. f. 17368; Encycl. Brittanica ed. 11. 4: 926. f. 3, 
as Phyllocactus; Rev. Hort. 1861: 226. f. 44; Stand. Cycl. Hort. Bailey 2: f. 1402. 
Cactus hybridus was described and illustrated by P. C. Van Géel (Sert. Bot. 1: pl. 
115. 1832). He states that it is known in Great Britain as C. ackermannii. 
EPIPHYLLUM HYBRIDUM Hortus in Pfeiffer, Enum. Cact. 121. 1837. 
This was given as a synonym of Cereus speciosissimus lateritius, which is briefly 
mentioned in volume 2 (p. 128) of this work. 
EPIPHYLLUM JENKENSONU G. Don, Gen. Hist. Dichl. Pl. 3:.170. 1834. 
Epiphyllum speciosum jenkensonii G. Don in Loudon, Encycl. Pl. ed. 2. 1202. 1841. 
This plant is an artificial hybrid raised from Heliocereus speciosissimus, impregnated by the 
pollen of Epiphyllum phyllanthoides; it has branches 3-angled at base but flattened above, with 
areoles very prominent and spiny; flowers large, 10 cm. broad and deep scarlet; fruit nearly 
globular, purple, 2.5 cm. in diameter, its areoles bearing a few spines and bristles. We have had it 
to flower and fruit in cultivation. 
EPIPHYLLUM SPLENDIDUM Paxton, Mag. Bot. 1: 49. 1834. 
Cereus splendidus Steudel, Nom. ed. 2. 1: 336. 18 
Epiphyllum aitoni Steudel, Nom. ed. 2. 1 561. . S40. 
Epiphyllum hitchenii Steudel, Nom. ed. 2. 1: 561.- 1840. 
We know this plant only from a colored illustration (P. : 
: ( axton, Mag. Bot. 1: pl. facing 49). The 
a is very large, To inches broad, red, tinged with orange; flower-tube much shorter ‘han limb, 
and suggests a relationship with Epiphyllum ackermannii. Branches flat and strongly crenate. It 
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