Salix] cxx. SALiriNE.f:. lOr?! 



at the base of Serra de Xella, near Bumbo. pKiitiful : withmit H. or fr. 

 Oct. 18olt. No. 6334. At a stream in Cbao da Xt-lla : mak- H. Oct. 

 18.')9. in company with Vernnuiu j>ii,l,,r()iiiii Schultz liii). (Wt-hv. licrli. 

 no. 3203 ; <nitr, p. .-.:V.»). \o. 6332/'. 



Hrii,i..v. — An arborescent, virgatily branched shrub ; branches and 

 branchlets reddish yolk of ej.'g coloured ; leaves herbaceous-green and 

 somewhat shining above, whitish beneath ; stamens G or rarely 7 ; 

 filaments monadelphous at the very base. At the banks of rivers and 

 streams about Lopollo, Monino, and the Ivantala lake, plentiful, about 

 3000 to 4000 ft. alt., in company with species of l-liKjotin (cf. 11. rjuiue- 

 rns/s, var. /intllf/i.'<is, Wehv. herl). no. 4403), Xpshu jxisufri/mii/fK 

 Koehne (cf. Welw. herb. no. 233(;), and a Proteacea. Fauna saliif„a 

 Harv. (Welw. herb. no. ir)'.l2) ; male il. dan. and March 1H(!0 ; female 

 fl. and fr. April 1S(3(). The shrub rather rarely fruits, forstaminiferous 

 specimens were fretiuently seen all the way from Bumbo to the 

 Ivantala lake, but pistilliferous ones only in one place, namely at 

 Monino. No. 6332. In wooded places at IMonino by streams, in 

 company with the willow-like Proteacea, Fa/imi xaliijiui'Uavv. (Welw. 

 herb. no. ].';92) ; fr. March iSliO. It is singular that the leaves on the 

 shoots which bear the female catkins are alwa3s more or less obtuse at 

 the apex, while the rest of the leaves on the same branches have a long 

 acumen like those on the male plants. No. 6333. 



CXXI. CERATOPHYLLE^. 

 1. CERATOPHYLLUM L. ; Benth. & Hook. f. Gen. PI. iii. p. 41.'}. 

 1. C. demersum L. Sp. PL, edit. 1, p. 992 (1753); Cnruel in 

 Nuovo Giorn. But. Ital. viii. p. 28. t. 3 (Jan. 187G). 



C. vuhjare Schleid. in Linnaea xi. p. 540. t. 11 (1837); Benth. 

 in Hook. Niger FI. p. 525 (1849). 



Baui{.\ 1)1) D.VNDi:.— Leaf-segments toothed. In pools at the river 

 Dande, without fl. or fr., rather rare, Nov. 1853, in company with 

 Pistia Slratiutes L., var. obeoxJald Engl. (cf. j)Ost, ii. p. 85), and 

 another aquatic plant with a Myriophyllaceous habit. N'o. 524- 



Bakk.v no Br.NGo.— A form with the leaf-segments strongly toothed. 

 In the large lake called Lagoa de Quifandongo, at the mouth of the 

 river Bengo, without fl. or fr. Dec. 1.S53, in company with Xn/a.-i 

 WehcitscJiii Rendle, j>nst, ii. p. 95 (1.^99), Welw. herb, no.' 247. No. 525. 



looi.i) E Bengo. — Leaf -segments somewhat toothed. In the large 

 lake called Lagoa de Quilunda, without fl. or fr. 14 Sept. ls54. in 

 company with Oixtal/a i/ii/st/ca Salisb., var. (h'litata (Welw. herb, 

 no. 111)8 ; ante, pp. 22, xxvi), Pi.-<fuiStratiotesL. (Welw. herb.no. 214), 

 Leiniui panricostiita Hegelm. (Welw. lierb. no. 213 ; post, ii. p. 91), 

 and Wolffia Mkhelii Schleid. (Welw. herb. no. 211 ; post, ii. p. 92). 

 No. 524/'. 



PiNco Andonoo. — Leaf -segments somewhat toothed : fruit ^ in. 

 long, surmounted with a slender style about the same length, long- 

 spurred near the ba.se. In the river Cuije not far from its junction 

 with the river Cuanza, also near Sansamanda on the Cuanza, plentiful, 

 fl. and fr. ilarch 1857, in company with Castalia mystira Salisb., var. 

 dentiita (Welw. herb. no. 1105, and Azolla (Welw. herb. no. 38). 

 No. 526. 



The specimens that are not provided with fruit are difficult to 

 distinguish from the subspecies C. subnierfnim L. Sp. PI., edit. 2, 

 p. 1409 (1703). 



