PHANEROGAMS — PROFESSOR BAYLEY BALFOUR. 245 



internodiis 1^ poll. longis, juvenilibus longe pilosis. Folia petiolata § poll, longa ad 

 ramos laterales contractos dense rosulatim conferta cochlearifonnia v. spathulata parte 

 superiore expansa \-\ poll. diam. superne 5-7-dentata dentibus acuminato-subulatis 

 pungentibus inferne integra cuneatim in petiolum lougum attenuata crassinscula 

 5-7-nervia nervis subtus prominentibus firmis glanduloso-puberula et pilis longis sericeis 

 varie vestita ; petiolus \ poll, longus complanatus sulcafcus basi amplexicaulis dense 

 sericeo-villosus. Flores in axillis solitarii brevissime pedicellati bracteis setoso-subulatis 

 longe pilosis calyce parum brevioribus. Calyx \ poll, longus extus glanduloso-puberulus 

 et pilis paucis longis vestitus intus nitidus eb pilis adscendentibus instructus, tubo 

 campanulato ore requali, limbi dentibus 5 sequalibus deltoideis acuminatis subulato- 

 pungentibus. Corolla -fy P°H- longa, tubo extus in feme glabro superne pubescente intus 

 piloso-annulato et antice leviter pubescente, limbi lobo postico parum concavo oblongo- 

 obovato emarginato dorsaliter margineque dense villoso, antici lobi segmento medio 

 maximo subspatbulato emarginato crenulato segmentis lateralibus obliquis truucatis. 

 Stamina corolla breviora, filamentis acerosis et basi pilosiusculis. Discus crenatus. 



Soeotra. On the limestone cliffs south-west of Galonsir. B.C.S. n. 233. 



An extremely interesting form of this genus differing from all hitherto 

 described. Like the last mentioned species it is prickly, although the leaves 

 are not hard and glabrous, and it has also solitary axillary flowers. The 

 feature by which it is distinctly marked out is its habit. On the limestone 

 cliffs in the only situation where we found it, its long runners spread over the 

 rocks to a great distance, and the nodes producing plantlets which fix them- 

 selves in the crevices of the rotting stone, the plant thus covers a wide area. 



8. TEUCRIUM. 

 Teucrium, Linn. Gen. n. 706; Benth. et Hook. Gen. PI. ii. 1221. 



A very large genus of both warm and temperate climates, having its maximum 

 in the Mediterranean region. Both the Socotran species are endemic. 



1. T. (Polium) prostratum, Balf. fil. in Proc. Roy. Soc. Edin. xii. (1883), 

 92. 



Prostratum ramis incanis ; foliis petiolatis oblongis apice truncatis dentatis basi abrupte con- 

 tractis revolutis ; floribus in capitula pauciflora dispositis ; corolla calyce pubescente 

 duplolongiore. 



Perenne parvum prostratum basi lignosum ramosissimum rainulis incanis patentibus subprostr- 

 atis ultime adscendentibus. Folia brevissime petiolata \-\ poll, longa oblonga apice 

 truncata obscure dentata basi abrupte in petiolum contracta margine integra revoluta 

 firma supra plus minusve rugosa pubescentia medio sulcata subtus incana venulis pro- 

 minentibus ; petiolus ^ poll, longus. Flores breviter pedicellati in axillis foliorum superi- 

 oruin solitarii et nonnunquam in pauciflorum capitulum folia excedentem conferti. Calyx 

 tubuloso-campanulatus \ poll, longus pubescens, dentibus 5 late ovatis acutis subciliatis. 

 Corolla ^ P°ll- longa extus puberula intus antice palato piloso, limbi lobo medio maximo 

 subspathulato concavo obtuso margine sinuato-crenato, lobis lateralibus minimis. Stamina 

 longe exserta, filamentis basi pilosiusculis. Nuculce valde rugosse. 



