406 



ARTICLES IN JOURNALS. 



series Verticillatm, cut off from the rest of the subclass by its 

 numerous macrospores and the other well-known characters which 

 distinguish the course of development in the ovules. In the other 

 twenty-five series an attempt is again made at an arrangement as 

 far as is possible in linear series, from the typically simple naked 

 flowers like those of SalicinecB, through the typically apetalous 

 (UrticaceiE, &c.), polypetalous and thalamifloral (Ranales), poly- 

 petalous and calycifloral, to the polypetalous and epigynous, series 

 26 being the Umbellifiorm. 



The arrangement of Synipetalcs is in eight series — 



1. Ericales. 



2. Primulales. 



3. Ehenales. 



4. ContortcB (Oleaceae, Gentianace^, &c.). 



0. TuhijiorcB (Convolvulace^, Polemoniaceae, Boragineae, Scro- 

 phulariace^, Labiatae, &c.). 



6. PlantcKjinales. 



7. Rubiales (Rubiace?e, Caprifoliace^, Valerianace^e, Dipsacese). 



8. Campanulat(B (Cucurbitaceae, Campanulace^, Compositfe). 



In series 1 and 2 polypetaly sometimes appears ; the flowers are 

 geujrally hypogynous. In series 3 sympetaly is a fixed character, 

 but the number of stamens is sometimes very large. Hypogyny is 

 the rule. Series 4 differs in haviug only one staminal whorl. The 

 remaining four are exclusively sympetalous and haplostemonous, 

 with generally two carpels, which are completely united. The 

 flowers are frequently zygomorphic. In 5 and 6 the corolla is 

 hypogynous, in 7 and 8 epigynous. CompositcE ends the series as 

 the acme of simplification by reduction and union of parts. The 

 position assigned to Cucurbitacea next to Campanulacem, though 

 strange to English systems of classification, is not new to Con- 

 tinental arrangements. It seems a more natural one than its 

 place towards the end of Pohjpetalm. Under each natural order 

 (family) is a concise diagnosis, followed in most cases by equally 

 concise descriptions of subfamilies and other divisions, with 

 mention of the most commonly occurring geuera, or those of im- 

 portance from some economic point of view. 



A. B. Rendle. 



ARTICLES IN JOURNALS^ 



Annals of Botany (Sept.). — W. R. Shaw, ' Fertilization of 

 Onoclea' (1 pi.).— H. M. Ward, ' Some Thames Bacteria ' (2pl.).— 

 T. Gr. Hill, ' Roots of Biynonia ' (1 pi.). — C. A. Barber, ' Capressi- 

 noxylon vectense' (2 pi.). — A. J. Ewart, 'Action of Cold and of Sun- 

 light on aquatic plants.' — R. Scott & E. Sargant, 'Development 

 of Arum maculatum from seed ' (1 pL). 



* The dates assigned to the numbers are those which appearon their covers 

 or title-pages, but it must not always be inferred that this is the actual date of 

 publication. 



