175 
mality (International Rules, Art. 37 and 51). Maximowicz gave 
the name A. ecalcarata in 1889 to a new spurless columbine from 
Kansu and Szechuan (FI. Tangut. p. 20, t. 8, fig. 12). Two years 
later Miss Eastwood used it for a new spurless columbine from 
Colorado (Zoe, ii. p. 227). A. ecalcarata, Maxim., and A. ecal 
carata, Kastw., have recently been transferred to the genus 
Semiaquilegia, as S. simulatriz and S. EHastwoodiae (Kew Bull. 
1920, p. 165). Maximowicz’s species should, however, in 
accordance with the International Rules, if retained in Semia- 
quilegia, bear the name S. ecalcarata, Sprague et Hutchinson 
(comb. nov.). According to the late Mr. Reginald Farrer, it is 
abundant in alpine woods and backwoods in Kansu. Plants of 
S. ecalearata have been raised from seed of Farrer no. 280 by 
Major F. C. Stern, Goring-by-Sea, Sussex.—tr. a. s. and J. H: 
The generic name Wikstroemia.—Three different genera, 
belonging to as many families, have been given the name 
Wikstroemia, in commemoration of the Swedish botanist Johan 
Emanuel Wikstrém, the author of a dissertation on Daphne 
(1817), a flora of Stockholm (1840) and other works. Wikstroemia, 
Schrad. (1821) is synonymous with Haemocharis, Salish. (Lap- 
, H.B.K.), one of the Ternstroemiaceae; Wikstroemia, 
Spreng. (1826) has been reduced to Hupatorium, Linn. (Compo- 
sitae); and Wikstroemia, Endl. (1833), a genus of Thymelacaceae, 
has been placed on the list of Nomina conservanda, provided for 
in Art. 20 of the International Rules of Nomenclature. 
Some misunderstanding seems to have arisen as to the inter- 
pretation of Art. 20, the official (French) text of which reads as 
follows :—‘“‘ Art. 20. Toutefois, pour éviter que la nomenclature 
des genres ne subisse par l’application stricte des régles de la 
nomenclature, et en particulier du principe de priorité a partir 
des dates données a l’art. 19, un bouleversement sans avantages, 
les régles prévoient une liste de noms qui doivent étre conservés 
en tous cas. Ces noms sont de préférence ceux dont l’emploi est 
devenu général dans les cinquante ans qui ont suivi leur publica- 
tion, ou qui ont été utilisés dans les monographies et dans de 
grands ouvrages floristiques jusqu’en 1890.”” This explicitly states 
that names included in the list are to be retained in any event, 
being exempted from the operation of the other Rules in so far 
as these would involve their rejection. Owing to the Nomina 
conservanda having been published in tabular form with Nomina 
rejicienda placed in a parallel column, the idea seems to have 
gained acceptance that they were only retained conditionally, 
being preferred merely to the Nomina rejicienda cited, but this 
view is precluded by the wording of Art. 20. Wikstroemia is a 
ease in point. Blake has pointed out that the generic name 
Haemocharis, Salisb. was not effectively published, being unaccom- 
panied by a description, and that the next name for this genus 
in order of priority is Wikstroemia, Schrad., which antedates 
Laplacea, H.B.K.* He concludes that, under the International 
* Contrib. Gray Herb. liii. p. 36 (1918). 
