126 MR. ©. C. LACAITA ON TWO 
non Hoffmg. & Link = T. angustifolius var. Chaubardi, Boiss. & Heldr. Diagn. 
ser. 2, iv p. 6 (1859) 2 T. Serpyllum var. Chaubardi, Boiss. Fl. Or. 1. c.), 
which is the common representative of the Chamadrys forms of T. Serpyllum 
all over Greece, and also occurs in profusion in the mountains of South- 
Western Italy. But in a MS. note posthumously published in Fl. Or. Suppl. 
p. 359 (1888) Boissier, in deference to Celakovsky s opinion, separates 
T. Chaubardi, * T. Chamedryi nimis affinis,” from. T. heterotrichus, Griseb., 
identified with T. lanceolatus, Sm. and T. Sibthorpii, Benth., which is “ab 
omnibus T. Serpylli formis plane diversus." For in the meanwhile 
Celakovsky, the most clear-sighted observer in this genus and one not 
disposed to overrate lesser variations, had put the matter right in Flora, xl. 
(1882) pp. 146 and 172, on the strength of specimens collected on Mount 
Athos by Janka and by Pichler, identifying T. heterotrichus with T. Sibthorpit, 
whilst clearly distinguishing T. Chaubardi. He does not appear to have 
seen Grisebach’s type, but the precise locality ensures Janka’s and Pichler's 
specimens being identical with it. On the other hand, he had certainly not 
seen Sibthorp’s specimen for which no precise locality is assigned, but it is 
known that Sibthorp visited Mount Athos. His herbarium contains many 
plants from that mountain. I have compared his type with Pichler’s Athos 
plant, which I have examined in Herb. Kew and in an example generously 
lent for inspection by the conservator of Herb. Boissier, and feel quite 
certain of their identity. Pichler’s plant was collected in August 1873. 
The tickets of the two Kew examples read (a) * Macedonia, in sylvis Montis 
Athos, Aug. 1873,” (b) ** Macedonien, Auf Pergen (se. Bergen) am M. Athos 
bei Charies. Aug. 1873,” and that of Herb. Boiss. “Th. Sibthorpii, no. 183, 
Auf dem nordlichem Abhange des Monte Santo.” Janka’s specimens I have 
not seen, but there is a plant in Herb. Boiss. from Constantinople, leg. 
Coumary, under the name of 7. montanus, Waldst. & Kit., which is cer- 
tainly T. Sibthorpit, though the leaves are rather broader and more obtuse. 
Velenovsky, Fl. Bulg. p. 469 (1891) and in his Nachtrag of 1903, p. 15, 
describes 7. heterotrichus, Griseb. at some length, asserting that it is plenti- 
ful in Macedonia on the Konjovo Planina and Osgovska Planina, at Krapee 
and above Rilo Selo; “planta in M. Atho a cl. Janka lecta eadem est ac 
nostra.” In the Nachtrag he says “in Bulgaria valde frequens " and creates 
a subspecies cinerascens, * planta eximia sed transit in typum,” for which he 
quotes five Bulgarian localities. But he does not allude to the identity with 
T. Sibthorpii, although his Flora was published nearly ten years after 
Gelakovsky’s work. It is also surprising that Haláesy in his‘ Conspectus 
Flore Grace,’ ii. p. 563 (1902) should have repeated the erroneous 
identification of 7. Sibthorpii with T. Chaubardi ; on p. 965 he alludes to 
T. heterotrichus, Griseb. as “species ab autoribus varie interpretata, mihi 
ignota." 
I have not seen specimens of T. heterotrichus from the habitats enumerated 
