[Crown Copyright Reserved. } 
ROYAL BOTANIC GARDENS, KEw. 
BULGETIN 
MISCELLANEOUS INFORMATION. 
No. 3] [1922 
A REVISION OF AMOREUXIA. 
T. A. SPRAGUE. 
XIV. 
The small family Cochlospermeae was proposed in 1847 by 
Planchon* for the reception of two genera Cochlospermum and 
Amoreuxia, which had previously been referred to the Malvaceae, 
Ternstroemiaceae, Cistaceae and other families. Bentham included 
these genera in Bixineae, tribe Bixeae,t and Warburg, who 
treated the Bixeae as an independent family, Bixaceae, proposed 
the new tribe Mazimilianeae, for their accommodation.{ They 
were removed from the Bizxaceae (sensu stricto) in 1897 by 
Engler, who restored the group to family rank as Cochlospermaceae, 
mainly on account of the presence of oil instead of starch in the 
food reserves of the seed. Van Tieghem also regarded the 
group as an independent family.|| : 
Cochlospermum includes at least 15 species, natives of tropical 
and subtropical America, Africa, Asia and Australia, the head- 
quarters of the genus being in tropical America. Amoreuxia, on 
the other hand, is confined to cropical and subtropical America. 
- Cochlospermum has a unilocular ovary, and uniform stamens, 
whereas Amoreuxia has a trilocular ovary, and two sets of 
stamens on opposite sides of the flower, one with long and the 
other with short filaments. This makes the flower noticeably 
zygomorphic. 
The genus Amoreuxia was dedicated by Mociio and Sessé 
to a Montpellier botanist, P. J. Amoreux, and was published 
by A. P. De Candolle in 1825.4 It was based on one of an 
extensive series of coloured drawings intended to illustrate 
Mocifio and Sessé’s unpublished Flora of Mexico, and is known 
only from De Candolle’s description, and a coloured copy of 
* Hook. Lond. Journ. Bot. vi. p. 139 (1847); Ann. Sc. Nat. sér. 4, 
xvii. p. 90 (1862). 
Benth. et Hook. f. Gen. Pl. i. p. 122 (1862). 
t Engl. et Prantl, Pflanzenfam. il. 6, p. 310 (1895). 
§ Engl. et Prantl, Pflanzenfam. Nachtr. p. 251 (1897). 
|| Journ. de Bot. 1900, xiv. pp. 32-54. 
§ DC. Prodr. ii. p. 638 (1825). 
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