1331 



CACTUS* (Epiphyllum) Ackermarmx. 

 Ackermann's Meocican Cactus. 



ICOSANDRIA MONOG YNIA. 



Nat. ord. CactejE. 



CACTUS. — Supra, vol. 2. fol. 137. 



Subgenus Epiphyllum Hermann. — CorollcB tubus longissimus, me- 

 diocris, v. brevissimus, sparsim et remote squamulosus, inermis, e 

 crenis ramulorum ortus, inter perpusillas et innocuas spinulas ; 

 limbus (coroUse fugacis) alte multifidus, vel quasi polypetaloideus, 



rosaceus, aut subinde plus minus elegantissim^ ringens. Suf- 



frutices Americce calidioris ramosi, graciles, sed vix scandentes ; in 

 scopulos rupesve, vel super arborum truncos ; ramulis alatiin com- 

 pressissimis, tenuibus sed carnosulis, lobato-crenatis, viridibus, 

 IcEvibus, uxi centrali gracili ligneo. Flores solitarii, scepius magni 

 speciosi, albi rosei coccineive, rarius saaveolcntes. — Haworth in Phil. 

 Mag. Aug. 1829. 



C. (Epiphyllum) Ackermanni ; corolla maxima obsoletissime ringente ante 

 florescentiam assurgente, apice acuto ; quam tubus fere quadruple 

 longiore. Haworth I. c. 



Facies C. phyllanthoidis, at ratnorum lobi pauciores, obtusiores, et fere 

 auriculiformes ; et in eormn axillis spinulce or dinar ice forte rnagis conspicuce. 

 Flores solitarii, sed numerosi, et afjftnium more directione fere horizontali ; 

 tubo cicm genuine plusquam 2mciali, sordidc viridi, et quasi quinquangulari 

 t decursione squamularum paucarum sen remotarum et calycinarum. Petala 

 imbricata, acuminata, nitentia, inferiora longc minora, canaliculatim cari- 

 nata, apice recurvula ; summa quasi biserialia, semi-expansa, lanceolata, 

 coccinea ; horum ccelum versus oblonga et lanceolata, ccetera terram spec- 

 tantia oblonga et angustiora. Genitalia ut in affinibus, corolla breviora, 

 declinata, rosea, sed apicem versus ciirvatim ascendentia ; stylo hurniliora, 

 stigmatibus circiter septem. — Haworth 1. c. 



* Theophrastus has a »«xto;, which is the modern Cynara Cardunculus, 

 Cardoon or Chardon, the petioles of which are used as a delicate vegetable : 

 it had no other resemblance to the modern Cactus than in being prickly. 

 Epiphyllum, which signifies " upon a leaf," is a name given long since, under 

 the idea that the stems of these plants were leaves, and that consequently 

 the flowers grew upon leaves. 



