206 Evans: NOTES ON GENUS HERBERTA 
In thus restricting the range of the latter species, writers differ 
markedly from Dumortier.* He considered that his Schisma 
stramineum, under which he included S. Sendineri Nees as a syno- 
nym, grew in Scotland, as well as in Austria and Germany. His 
species, in fact, was based on Scottish material. Apparently his 
only recent follower is Lett,} who admits both H. adunca and 
H. straminea as members of the Scottish flora. 
Botanists have leng recognized the fact, however, that H. 
adunca includes two well-marked forms. These were distinguished 
by Gottsche,t as long ago as 1862, under the names, a Dicksoniana 
and 8 Hutchinsiae. He applied the first name to the plant with 
shorter, erect-spreading leaves, having straight acuminate di- 
visions, and the second to the plant with longer leaves, hooked when 
dry and squarrose when moist, having lanceolate, incurved di- 
visions. He considered that a Dicksoniana was primarily a plant 
of Scotland while 8 Hutchinsiae was primarily a plant of Ireland, 
and yet he made no attempt to restrict the range of either form 
definitely. Carrington,§ in taking up the name 6 Hutchinsiae, 
implies that all the Irish specimens are referable to this form and 
states that the species grows at much lower altitudes in Ireland 
than in Scotland. He adds that both forms grow in Scotland, 
the form with ovate or ovate-lanceolate leaves being restricted to 
higher and exposed mountains. This form is clearly Gottsche’s 
a Dicksoniana, although Carrington does not call it by this name. 
He includes under it Dumortier’s S. stramineum as a synonym and 
calls attention to the fact that it approaches H. Sendineri. Al- 
though subsequent British writers have paid little attention to 
Gottsche’s names, Schiffner has recently revived them and Bis 
them to specimens in his exsiccatae.|| 
From a careful study of European specimens referred to H. 
adunca, the writer has reached the conclusion that Gottsche’s two 
so-called forms represent two distinct, but closely related, species- 
The form a Dicksoniana, as its name implies, represents the type of 
Jungermannia adunca Dicks. In the absence of Dickson’s original 
* Bull. Soc. Bot. Belgique 13: 125. 1874. 
2 
{ Rabenhorst, Hep. Eur. 210. 1862. 
§ Trans. Bot. Soc. Edinburgh 7: 454. 1863. 
|| Hep. Eur. Exsic. 403-407. 1912. 
