278 THE JOURNAL OF BOTANY 



plant is described as being clothed with red hairs ; the flowers are 

 white, with equal calyx-lobes. The original description is unfor- 

 tunately insufficient to enable me to determine the affinities of 

 this species. 



34. M. ? heinsioides Hiern in Fl. Trop. Afr. iii. 70 (1877).^ This 

 is referred doubtfully to Musscenda by the author, and in the 

 absence of flowers the genus is questionable. The general habit 

 suggests this genus. The calyx-lobes are linear to spathulate and 

 all equal, and the fruits are borne in groups of three. 



Congo ; Christian Smith, 59 ! Hb. Mus. Brit. 



M. capsulifera Balf. fil. in Proc. Eoy. Soc. Edin. xi. 836 (1882). 

 Trans. Eoy. Soc. Edin. xxxi. 116 (1888), t. 29. 



Socotra : Balfour, 550 ! Schiveinfurth, 455 ! 57] . Hbb. Mus. 

 Brit., Kew. 



I am in considerable doubt as to whether this plant is properly 

 referred to Musscenda, but for the present I prefer to reserve the 

 question. The general facies and habit, the shape of the corolla, 

 and especially the very small capsules with deciduous calyx-lobes, 

 lead to the suggestion that this may represent a new genus. The 

 mere fact, however, that the fruit is dehiscent does not preclude 

 its inclusion in Musscenda ; for two typical members of the latter 

 genus — M. luteola and M. Monteiroi — bear loculicidal capsules. 



M. ? platyphylla Hiern. he. cit. 



This is, I think, undoubtedly referable to Leptactina, and we 

 may adopt the name Leptactina platyphylla Wernham, comb, 

 nov. The nearest affinity in L. euosmia K. Sch., from which this 

 is readily distinguished by the roughish pubescence of the vege- 

 tative parts and the ribbed fruit. 



Monbuttu-land : near Bongua, Schiveinfurth, 3626 ! Hbb. 

 Mus. Brit., Kew. 



CAITHNESS PLANTS. 

 By Arthur Bennett. 



1. Subularia aquatica L. — By Loch Stemster, Loch Rhuard, 

 and between Lybster and Loch Ehuard with Saxifraga Hirculus L. 

 and Lobelia Dortmanna L. (Mr. Lillie, sp.). Loch Chalinin and 

 Loch Scye, Mr. Crampton (Vegetation of Caithness, p. 73). Known 

 only from one station in the county before 1911. I have it from 

 Shetland (Beeby, sp.) and the Outer Hebrides (Duncan, sp.), but 

 do not think it has been found in the Orkneys. It is generally 

 distributed in Sweden, Lapland, and over Finland to the extreme 

 north, Iceland, and the Faroes. 



2. Callitriche intermedia Hoffm., var. homoiophylla Gr. et 

 Godr. Fl. Fr. i. (1848), p. 591 (hamulata), "Variete souvent 

 sterile." — This seems to be by far the commoner form of C. inter- 

 media in the North. Fries has a C. tenuifolia Nov. Fl. Suec. ed. i. 

 (1814), p. 11, which Lonnroth makes a var. of hamulata Kuetz., 

 quoting with a ! ; Fries, Fl. Scanica, 1835, and Persoon, Syn. PI. 

 1805, where it was made a species. But there is no description in 



