64 MR. F. N. WILLIAMS ON THE GENUS SILENE. 
‘8. canopica,” which are in the Montpellier herbarium, are, according to 
Schweinfurth, identical plants; but the descriptions of these specimens 
were not published till 1867, and in each case posthumously. Delile’s plant 
was described by Boissier (FJ. Orient., i. p. 596), and Ehrenberg’s plant 
was described by Rohrbach (Bot. Zeit., xxv. (1867) p. 82) ; Rohrbach after- 
wards rejecting S. canopica, because he was unaware that Sieber’s specimens, 
which were the ones that he examined, were wrongly labelled. Therefore, 
in view of Rohrbach’s misapprehension of the identity of the species, the 
name taken up by Boissier is to be preferred as the name of the species, 
and Boissier’s description should be cited as the authority, since the 
specimens do not seem to have been adequately distributed. 
Hab. Lower Egypt; near Alexandria and Damietta. 
64. Sirene Kuscuakewiczt, Regel et Schmalh. in Act. Hort. 
Petrop., v. (1877) p. 246. 
Caulis simplex, adscendens, geniculato-flexuosus, retrorso- 
puberulus. Folia obverse oblonga, acuta, integerrima, asperula, 
ramulorum sterilium in petiolum ima basi ciliatum attenuata. 
Flores initio subsessiles demum longe pedicellati. Pedunculi 
pedicelli calycesque pilis tenuibus albis confervoideo-crispis 
eglandulosis albido-villosuli. Calyx cylindrico-clavatus albido- 
membranaceus, nervis purpurascentibus apicem versus lateraliter 
anastomosantibus instructus, dentibus_ elliptico -lanceolatis 
obtusis late albo-marginatis. Petala alba bifida, unguibus 
paullulum exsertis, limbo obovato, lobis obovato-oblongis 
obtusis, appendicibus binis emarginatis. 
Hab. Near Wernoje, in Turkestan. 
65. S. seracea, Viv., Fl. Lyb., p. 23, t. 12 (1824); Rohrb., 
Monogr, p. 105. 
Lusus 1. Caulis sepe ramosus; calyx inter nervos glaber 
nervis densissime hirsutis; ungues petalorum exserti. 
Adde syn. S. ligulata, Viv., Fl. Lyb., p. 24, t. 12; Rohrb., 
Monogr., p. 104, et in Linnea, xxxvi. (1870) p. 261. 
Lusus 2. Caulis humilior; flores paullum minores; calyx 
totus breviter pubescens; ungues petalorum inclusi. 
Adde syn. S. brachystachys, Webb, Fragm. Fl. Aethiop.-Aegypt, 
p. 34; Rohrb., Monogr., p. 109, et in Linnea, xxxvi. (1870) 
p. 261. 
Geogr. limits —N. Tunis. 
S. Nubia. 
E. Arabia Petrea. 
W. Djebel Tizelmi, in 8.W. Morocco. 
