( 43 ) 



bentia; massa celiularis nunc in media cavitate, proembryones sive embryo- 

 nis suspensorem exserens. Auct. magn. 



Fig. 9. Zamiae cuiusdam endospermium, apice nuclei cono depresso oper- 

 culatum, 



Fig. 10. cui deprompto corpuscula retracta inferne adhaerent. 



Fig. 11. Encephalarti incognili endospermium apice nuclei cono exsiccato 

 obtectum, radicula progerminante exserta (e semine tab. I, fig. 17 delineato). 



Fig. 12. Macrozamiae Fraseri endospermium longiliudinaliter apertum 

 cum embryone, cuius radiculae exsertae apparatus proembryonis exsiccatus 

 adhaeret (e semine tab. I, fig. 15—16 delineato). 



Fig. 13. endospermium Cycadis mediae, longitudinaliter apertum, cum 

 embryone et suspensoris parte. 



NASCHRIFT. 



Onder het afdrukken van dil opstel ontving ik van Dr. 

 M asters een blad van Gardeners C/ironicle, bevattende eene 

 mededeeling over Cycas revoluta var. inermis, die tot ophelde- 

 ring van het hierboven aangevoerde kan strekken: 



//Is Cycas inermis, of Loureiro, a good species, or is it a 

 variety of C. revoluta? Opinion has fluctuated considerably as 

 to this point. M. miquel, the monographer of the family, con- 

 sidered the C. inermis to be a distinct species, but subsequently 

 reduced it to C. revoluta. Professor oudeiMans, of Amsterdam, 

 has recently re-examined fruiting specimens of the two, and 

 comes to the conclusion that they are both entitled to specific 

 rank. There is, says the Amsterdam Professor, considerable dif- 

 ference in the shape of the ovule (what the general observer 

 would call the berry in these plants). In C. revoluta this is 

 depressed at the summit //obcordate, 11 like the //eye 11 of au 

 Apple; while in C. inermis it is drawn out into a short point. 

 In addition to this there are anatomical differences and variations 

 in the mode of development, as well as differences in the shape 

 of the fruit-bearing leaf, that of C. inermis having broader, 

 thicker divisions, spreading horizontally, while in C. revoluta 

 the laciniae are longer, more slender, and with a greater up- 

 ward tendency, so that they form with the axis an acute instcad 



