— 36 — 

 catis. Semina imbricata , peltata, inversa : aut cymbœformia (dorso convexo, facie 

 concava) , rugosa, aptera, marginibus inflexa, aut lœvia, v. puncticulata, lenticu- 

 laria, ala cbartacea cincta. Embryo axilis! rectus , umbilico parallelus, albumine 

 subaequilongus ; radicula infera (1/ cotyledonibus plano-convexis , tenuibus, ova- 



libus, obtusis. 



Herbœ perennes, v. biennes, v. annuae, paniculatœ v. subdichotoma;. Folia op- 

 posita, sublinearia , connata. Flores fasciculato-congesti, v. subcymosi, v. solitarii, 

 terminales, ebracteolati aut involucello 2-v.-4-phyllo, scarioso, cincti. P étala alba 

 v. purpurea, imberbia, lamina tenuissime 3 -nervi; nervis in ungue disco plus mi- 

 nusve a°glutinato confluentibus. Pedicelli fructiferi, erecti, stricti, incrassati. 



GENRE NOUVEAU DE LA FAMILLE DES CYCADACÉES , 



Par F. -A. -G. Miquel. 



( Monog. Cyead., 1842, t. 4, V. ) 



MACROZAMIA (5). — Spadices antheriferi dense in conum imbricati, cunéi- 

 formes, apice sterili, sursumfiexo; corpore antherifero linea mediana in duas 

 partes diviso , quarum utraque aream antherarum oblongam fert. Antherœ dense 

 confertœ, sœpe quaternatim junctœ. Spadices ovariiferi majores in majorera 

 conum dense collecti, e basi stipitata in peltam quadrangularem crassam, in lon- 

 gum et ascendens acumen excurrentem terminati , sub qua in foveis utrinque 

 ovarium ovoideum inversum. Nucis putamen homogeneum , parca pulpa in- 



clusum. 



Arhusculœ humiliores vel in modum Palmarum procerae, succo gummoso scaten- 

 tes. Caudex cylindricus , lapsarum frondium vestigiis squamatus, plerumque sim- 

 plex. Frondes caudicem coronantes numerosse ; stipile rhachique crassis, angu- 

 losis; illo inermi aut vix foliorum rudimentis utrinque spinoso ; foliolis linearibus , 

 rigidis , vernatione circa rhachim subspiraliter torlam accumbentibus , sibi invi- 

 cem imbricatis. Organa generationis in conos vel strobilos grandes collecta, qui 

 solitarii vel geminati ex apice caudicis erumpunt, pedunculis brevibus et crassis 

 suffulti. In Nova-Hollandia crescentes. 



Zami^ Spec. Auct. — Zamia spiralis , Salisb. , et nova species, M. Fraseri , 



Miq. 



(1) M. Fenzl [l. c.) se trompe en admettant que l'embryon des Tunica est excentrique et à radicule 

 vague. 



(2) Moex/so's , grand. 



