Pku. 1893.] BOTANICAL SOCIETY OF EDINBUKGH. 573 



first, the fourth below the second, and so on througliout 

 the series. The direction of the deviation from the vertical 

 of the highest serial bud depends, as Wydler remarks, on 

 the direction of the primary phyllo tactic spiral : if this is 

 to the right, then the deviation is to the right ; if left, 

 to the left. 



The subterranean branches are produced singly or in 

 similar series in the axils of either the cotyledons or the 

 first plumular leaves, but remain quiescent during the first 

 summer of the plant's existence, and only develope to any 

 great extent in the spring of the following year. Some 

 of them are consequently normal axillary buds arising in 

 the axils of the cotyledons or first leaves, while others are, 

 so called, accessory buds. 



M. Iiussell states, with a good deal of reason, that these 

 accessory buds are not adventitious structures, but are 

 successive branches arising from one another, the highest 

 serial bud being a branch of the normal axillary bud, while 

 the second is a branch of the first, and so on throughout 

 the series ; the leaves, in the axils of which the various 

 branches arise, remaining undeveloped, as do also the 

 internodes between them. 



LITERATURE. 



I. BaChmanx. — Biologisclie Bedeiituiig des Arillus einiger Legu- 

 minosen. — Berichte der Bot. Gesellschaft, Bd. III., 1885. 

 II. Bruyning. — Beitrage ziir Kenntniss uiiserer Laudbausamereiu. — 

 Ulex europieus Journal fur Land\Yertschaft, Berlin, 1893. 



III. Detmeh. — Vergleicheude Physiologie des Keimungsprocesses der 



Samen, p. .^9. 



IV. MATTniOLO E BusCALiONi. — Ricerchc anatomofisiologiche sui 



tegumeuti seminali delle Papiliouaceae. Memorie della \i. 

 Accademia delle Scieuze di Torino. — Serie II., T. XLII., 

 Bot. Centralblatt., Bd. LII., p. 155. 

 Y. NoBBE. — Handbuch der Samenkunde, 1876. 



VI. ScHLEtDEX UXD VoGEL. — EutwickluDgsgeschichte der Legu- 

 minosenbluthe. 

 VII. Sempolowski. — Beitrage zur Keuntniss des Baues der Sanien- 



schale. — Inaugural Dissertation, Leipzig. 

 VIII. "Wydler. — Kleinere Beitrage zur Kenntniss einheimischer 

 Gewiicbse. — Flora, 18G0, p. 23. 



I. Ulex eukop.eus. 



Seed. — The seed is ellipsoidal, and more or less laterally 

 compressed as regards the cotyledonary part, while the 

 radicle runs along the edges of the cotyledons for almost 



