PHILIPPINE B0RAGINACE2E. 
697 
though the Apo specimen which is in flower seems to be cospecific and is less 
pubescent than the plants from northern Luzon; the stems have the appressed 
pubescence directed downward except toward the apex ; the fruit is about 6 mm 
in diameter. 
China, Malaya, India, eastern Africa. 
9. BOTHRIOSPERMUM Bunge. 
Bothriospermum tenellum Fisch. & Mey. Ind. Sem. (1835) 24. 
Anchusa tenella Hornem. Hort. Hafn. 1 (1812-1815) 170. 
Luzon', Province of Benguet, Baguio, Elmer 5771), Williams 1359. 
There is difficulty over the specific name, involving species in two genera. 
Hornem. Enum. PI. Hort. Bot. Hafn. (1807) 3, enumerated Anchusa tenella Herb. 
Vahl, with no additional data, so that the name is a mere nomen nudum. The 
plant was Cynoglossum denticulatum DC. Prodr. 10 (1846) 150, with no other 
earlier synonyms. 
In 1813, Hort. Reg. Bot. Hafn. 1 : 176, Hornemann definitely published An- 
chusa tenella, the basis of the present species, and added as a note: “In Herb. 
Vahlii asservatur sub nomine Anch. zeylanica planta huic similis, sed cum 
infiorescentia (Racemus) differt, hanc novam esse speciem opinatus sum.” 
Jacquin, Eel. 1 (1811-1816) 47, pi. 29, has the following: “29. Anchusa zey- 
lanica. Anchusa zeylanica, herbacea eaule prostrato, foliis ovatis, hirsutis; 
fioribus solitariis interfoliaceis pedunculatis. Anchusa zeylanica. Herb. Vahlii. 
Hornemann, Enumer. plant, horti botanici hafniensis. 1807.” This is followed by 
a description of a plant, presumably that from which his diagnosis was drawn, 
which has been found by DeCandolle and others to be the same as Bothriosper- 
mum tenellum. 
The difficulties thus are two, the first a question of fact, whether Hornemann’s 
or Jacquin’s name is the older, the other a matter of interpretation, as to which 
of the two species is to be considered the type of Anchusa zeylanica Jacq. 
Bibliographic research can alone decide the former, but the probabilities, based 
upon the number of pages in his volume, give the preference to Jacquin. It seems 
clear, moreover, that he took the name from Hornemann, believing that he had 
the same species as the plant of the Vahl herbarium: had Hornemann actually 
published A. zeylanica, there would be no other option than to identify Jacquin’s 
species with Cynoglossum , denticulatum, making necessary a change in its specific 
name. But since A. zeylanica Vahl ex Hornem. is a nomen nudum, it is appa- 
rently better to retain the name for the plant that Jacquin actually had and 
described, namely Bothriospermum tenellum, leaving the question simply one of 
priority of publication. 
To Dr. C. H. Ostenfeld, I am greatly indebted not only for copies from the 
three publications here cited, but also for a reexamination of the specimen in 
Vahl’s herbarium. 
Northwestern Himalayas to Japan and Formosa. 
10. TRIGONOTIS Stev. 
Trigonotis philippinensis Merr. in Philip. Journ. Sci. 1 (1906) Suppl. 228. 
Luzon, Province of Benguet, Pauai to Baguio, Merrill 1)700 ; Pauai, Bur. Sci. 
T)7/2 M earns ; Mount Pulog, For. Bur. 16101) Curran Merritt cC- Zschokke. 
Endemic, much the farthest southeastern extension of the genus. 
Young flowers of this species, when compared with others taken from Indian 
material of Eritrichium striatum Decne., showed about equal curvature of the 
receptacle in the two species: in fruiting specimens of T. philippinensis the 
