23. EH AMJf ACE J5 . 
109 
The Tenerifan Cclastrus ( Catha ) cassinoides Herit. is a di- 
stinct sp. with more lax straggling branches, larger broader 1. 
and cymose-panicled fl. Dryander long ago in his MS. in 
BH. had well distinguished the two, calling the Tenerife pi. 
C. laxus, and the Mad. C. umbellatus. But they were presently 
confounded by Heritier, from whom a letter to Dr. Dryander is 
still extant in BH. containing the words, u Votre laxus et um- 
bellatus sont mon cassinoides.” His diagnosis and figure have 
been taken, however, altogether from the Tenerifan laxus , with 
the exception of the inflorescence in the plate, which seems to 
have been added subsequently, in an evidently slovenly and 
careless manner, to accommodate his figure to his view of its 
identity with the smaller-leaved Mad. umbellatus of Dryander : 
his union of this latter to the Tenerifan pi. having been appa- 
rently an afterthought. At all events C. cassinoides Herit. 
Sert. Angl. 6. t. 10 mainly belongs to the Tenerifan pi. ; un- 
fortunately superseding, by right of prior publication, Dryander’s 
excellent MS. name of laxus. 
To take up, however, Dryander’s other MS. unpublished 
name of umbellatus for the Mad. pi. would be undesirable, the 
epithet being founded on an erroneous view of the inflorescence, 
and, in fact, rather applicable to the Tenerifan than to the 
Madeiran pi. The latter therefore requiring a new specific 
name, will most appropriately bear that of its exact and learned 
first discriminator, by whose acumen it was long ago ably distin- 
guished from the Tenerifan pi. with which Heritier afterwards 
confounded it. And the two sp. will stand thus : 
1 . C. cassinoides Herit. ; fol. sparsis v. subterminalibus late ovalibus 
obtusis; fl. cymoso-paniculatis, cymis lateralibus axillaribus 
pedunculatis. — Celastrus cassinoides Herit. Sert. Angl. 6. t. 10. 
C. laxus Dryander ! MS. in BH. 
Hab. in Ins. Tenerifa, rr. 
2. C. Dryandri Lowe; foliosa dumosa fol. anguste oblongis v. 
elliptico-ovatis ; fl. aggregato-axillaribus, ped. unifloris raro 
3-pauci-floris vix sc. abortive subcymosis. — Celastrus umbel- 
latus Dryand. ! MS. in BII. ; Buch ! 198. no. 424. 
Hab. in Mad. reg. 1. 
Order XXIII. RHAMXACEHA 
The Buckthorn Family. 
Fl. regular. Sep. 5-4 deciduous, valvate in c estivation . Pet. 
5-4 alternate with the sep. inserted in the throat of the cal., 
G 2 
