﻿2AMIA. CyCADACE^E (AUGTOK ALPH. DC). 539 



hypogaso, Americanee; medulla fasoioulis vasorum non percursa (Miq. 

 in Linn. 1844, v. 18, p. 142; Karst. 1. c. 1856); perulis e basi lata aou- 

 minatis, saBpius prope apicem utrinque dentatis, nec ut in omnibus aliis 

 generibus integris; petiolis saspe sparsim aculeolatis; rhachi vernatione 

 apice recta vel levissime incurva; foliolis manifeste basi articulatis, 

 yernatione imbricativa, nervis parallelis, integris vel denticulatis ; 

 strobilis masculis interdum pluribus, squamis superioribus sterilibus 

 subcoalitis. -- Aoulei secus petiolum, quando adsunt, minime ut in 

 Cycade e segmentis inferioribus abortivis, sed sparsi et interdum fre- 

 quentes. 



Seqtjo i, Cbigua, 



Peltse squamarum mascularum superne inflatae, heptagonae, facie nempe una 

 exteripre cum sex aliis lateralibijs pb)jquis , stipjte lato. **- Fohola lata v. latius- 

 cula, plus quam ?-nervia. 



* Petioli aculeolati. 



1. Z. Cbigha (Seem. Bot. Herald p. 201. t. 43), petiolo crebre rhachi parce 

 aculeolatis junioribus tomentosis, foliolis alternis numerosissimis longe lan- 

 oeolatis acuminatis obsolete denticulatis glabris circiter 16-nerviis, strobilo 

 mase. cylindrico elongata apice obtuse cuspidato, pelta squamarum tomentosa 

 face superiore parva plana subquadrata faciebus lateralibas 4-6, stipite crasso 

 utrinque loculos gerente, strobilo fem. multo majore obtuso. 5 In insulis 

 ostii fl. San Juan isthmi Darien (Seem.) nuno culta in h. Kew. et forsan ad 

 Veraguas alt. 5-7000 p. (si planta Warsz, eadem), ~- Yates in Seem. }. 0. 

 Z. Lindleyi Warsz. in A. Dietr. in Otto et Dietr. allg. Gartenz. 19, p. 146 

 (ijbi descfiptip njmjs brevis ex cit. in Bot. Zeit. 1854. p. 327)? Z. Lindleyana 

 Warsz. apud "WendJ. 1, c. p. 53^ Z, Lindleyi Miq, prodr. Cycad. p. 24, 

 qiioad plaot- Seem. Truncus cyjindricus 20 cent. altus. Folia majora 1 m. 20 

 longa. Foliola utroque latere 66, patentia, nervis in medio 16, basi minus 

 numerosis, apicem versus ad rfiarginem fere omnibus tendentibus, acumine 

 inic.Seem. (ex specim. h. Kew.) integro acuto, ex descr. dentjculato, Strobili 

 masc. 13-16 cent. longi, pedunculo multo Jpngiores. Utroque latere' squamaa 

 duaa series loculorum, singulae 4 loculis. 



2. Z. spartea, petiolo crebre rhachi parce aGuleolatis junioribus tomentosis, 

 foliolis oppositis rarius alternis numerosis longe lineari-acuminatis apice 

 3-4-denticulatis glabris rigidis 7-10-nerviis , strobilo masc. cylindrico elongato 



apice , pelta squamarum tomentosa, facie superiore transverse elongata 



subquadrangula medio depressa faciebus lateralibus minoribus, stipite utrin- 

 que loculigero, strobilo fem. crasso tomentoso cuspidato. "ty-S Iu Mexico 

 merid. prope Acayucam, Verapa, Chimalapi (specim. botanici Hispan. a cl. 

 Alaman a. 1832. comm.). Vulgo Tzukix. Mordicationi serpentum antidota. Pars 

 infera speciminis truncata, solida, 3 cent. lata. Folia sex, perulis lanceolatis, 

 2-3 cent. longis , fulvo-tomentosis mixta, circiter 3 decim. longa. Petioli 4-5 cent. 

 longi, irregulariter aculeis rectis 1-2 mill. Iongis vestiti, subtus teretes, pube 

 demum evanescente. Foliola utrinque circiter 20, consistentia 6partea, glabra, 

 25-30 cent. longa, 4-5 mill. lata, basi ipsa angustiora, margine revoluta, 

 denticulis apice manifestis , nervis subtus magis distinctis. Pedunculus mas 

 fulvo-tomentosus, 7 cent. longus, flexuosus. Strobilus mas in specim. incom- 

 pletus. Peltaa crebra^, 4 mill, transverse longae, facie externa plana? (sicca 

 in medio depressa), Jateribus 6 obliquis, transversis longioribus. Pedunculus 

 fem. 3 i cent. longus, tomento brevi pubescens. Strobilus fem. in specim. 

 incompletus, pedunculo aequalis?, 2| cent. latus, cuspide 5 mill. longa, 

 pejtis, fransverse 7-8 mill. longis, mutuo adpressis, in medjo depressis, mar- 

 gine oblongp-anguloso subsexangularibus. (v, s.) 



3. Z. Skinneri (Warszew. in Otto et Dietr. Gartenfl. 19. p. 146. c. ic. xylogr.), 

 petiolo rhachique aculeolatis, foliolis oppositis v. alternis oblongis utrinque 

 acutis coriaceis nitidis a medio ad apicem spinuloso-serrulatis , nervis subtus 

 prominentibus supra depressis plerisque bifurcis, strobilis masc. 3-4 aggre- 



