138 J- Schuster. — Cycadaceae. 



Colombia: ohne Standort (Wallis); Isthmus Darien, auf dem Vorgebirge von 

 Cap Corrientes (Seemann 1847). — Von Wallis 1879 in den Garten Veitch einge- 

 führt, kultiviert in Kew 1880, Berlin 1881, Herrenhausen 1880. 



4. Z. Verschaffeltii Miq. in Verh. Akad. Wetensch. Amsterdam IL 4. (1869) 31; 

 Miq. in Arch. Neerl. (1870) 82. — Z. Potemkini Miq. in Verh. Akad. Wetensch. Amster- 

 dam II. 4. (1870) 30. — Z.fusca A. Verschaffelt in Catal.; Z.fusca Hort. Pauli, ex 

 Regel, Gartenfl. XXV. (1876) 261; Z. fuscata hört. — Z. muricata Regel y. Katzeriana 

 Regel in Herb. Leningrad. — Z. spec. Socorro Hort. Linden. — Ceratozamia Katzeriana 

 Regel in Gartenfl. (1876) 261; Rettig in Gartenfl. XLV. (1896) 261 f. 31. — Truncus 

 subconicus, circiter 15 cm altus, desquamatus. Cataphylla longe lanceolato-acuminata, 

 9 cm longa, basi 1,2 cm lata. Petiolus teretiusculus, apice tetragonus, fuscus vel ex 

 olivaceo pallide fusculus, initio leviter tomentosus, demum glaber, aculeis brevibus 

 rectis vel leviter arcuatis irregulariter plus minus confertis armatus. Rhachis viridis 

 vel fusca, inermis vel basin versus aculeolata, dorso convexa, antice bifacialis, inter 

 summa foliola in apiculum mucroniformem rigidum acutum excurrens. Folia 8 — 10- 

 juga, 1,50 m longa. Foliola juniora e rubro fuscescentia, vetustiora olivaceo- viridia, 

 nitentia, subtus pallidiora, chartacea, pellucida, late lanceolata, recta vel leviter falcata, 

 supra basin insertionis 3 — 15 mm latam non nisi leviter angustata, basi lata rhachi 

 antice inserta, sursum sensim angustata in acumen acutum, margine a medio vel tertia 

 parte ad apicem dentibus spinescentibus erectis serrulata, serraturis versus apicem 

 confertioribus, nervis 20 — 48 simplicibus paucioribusque bifidis utrinque prominulis 

 30 — 41-striolata, 14 — 35 cm longa, 3 — 5,5 cm lata. Strobilus <J e basi cylindrica sensim 

 attenuatus, apice acutiusculo, 4 — 6,5 cm longus, 1 — 1,7 cm in diametro. Pedunculus 

 2 — 8 cm longus, cinereo-sericeus. Peltae rhombeo-tetragonae vel hexagonae, medio 

 paulum concavatae, griseo-brunneo-tomentosae, 4 mm latae, 2,5 cm altae. 



Mexico: Socorro. — Von A. Verschaffelt aus Mexico eingeführt, kultiviert in 

 den Gärten Verschaff elt, Linden, Leningrad, Paullowsk, Katzer, Berlin 1875, 

 Herrenhausen 1880. 



F. 1. latifolia Schuster. — Foliola basi ad 1,5 cm lata. 



Kultiviert im Garten Verschaffelt. 



5. Z.Lindenii Regel ex Andre in 111. Hortic. XXII. (1875) 23 t. 195. - Z. Bara- 

 quiniana Hort. Leningrad. — Z. furfuracea angustifolia Regel ex parte in Herb. Lenin- 

 grad. — ?Z. Noeffiana Linden Catal. (1896) 23. — Aulacophyllum Lindeni Regel in 

 Gartenfl. (1876) 141. — Truncus cylindricus robustus, ad 1 — 2,5 m altus, 12 — 25 cm 

 diametro, foliis delapsis cicatrisatus. Cataphylla cuneato-peltata, rufa. Folia basi 

 ovato-cuneato-vaginata, numero 10 — 15, ad 1,5 — 2,5 m longa, 67 cm lata. Petiolus 

 2 m et ultra longus, subteres, lana fulva initio cum rhachi ferrugineo-tomentellus vel 

 subhirsutus, demum glabrescens, aculeatus, aculeolis conicis brevibus 3 mm longis 

 rectangulis albis. Rhachis teres, superne sulcata, aculeis usque ad tertiam partem 

 superiorem armata, folioli Ultimi abortivi loco in spinam 2,5 cm longam subulatam 

 apice tortam fusco-tomentosam excurrens. Foliola nitida, saturate glauca, glabra vel 

 vix puberula, utrinque 20 — 40, subopposita, longe lineari-lanceolata, 20 — 35 cm longa, 

 2,2 — 3 cm lata, apice sensim cuspidata, saepe inaequilateralia, basi anadroma raptim 

 attenuata, insertione 2 — 5 mm lata, saepe subfalcata, marginibus medio ad apicem 

 dentibus aculeatis brevibus erectis vel lateraliter distantibus serratis, nervis circiter 

 22 — 30 et ultra distinctissimis, horizontaliter patentia, chartacea. Foliola juniora 

 late lanceolata, 17 cm longa, 3 cm lata, supra basin serrata, basi subito valde quasi 

 in petiolum contracta. Strobilus <§ cylindricus. Peltae obtusule hexagono-pyramidatae, 

 altiores quam latiores, 5 mm altae, 4 mm latae, flavido-brunneo-tomentosae. Pars 

 fertilis truncato-cuneata, 6 mm longa, biloba. Strobilus $ 35 cm longus, 10 cm latus, 

 pedunculo 8 cm longo. Peltae subhexagono-pyramidato-truncatae, planae, ferrugineo- 

 tomentosae, 12 mm latae, 1 mm altae. Macrosporophylli partes inferiores mediae 

 angulato-elevatae. Semina matura obovata, 2,4 — 3 cm longa, 1,2 — 2 cm diametro, 



