PHANEROGAMS— PROFESSOR BAYLEY BALFOUR. 213 



crassata late undulata integra v. grosse aculeata \-\ poll, longa \-% poll, lata ssepe 

 multo minora recurva glabra supra grosse papulata subtus pallidiora rigida coriacea, 

 petiolo ^-\ poll, longo obscure puberulo. Flores in axillis solitarii breviter pedicellati ; 

 pedicelli petiolo aequilongi obscure puberuli. Bracteolce £ poll, longse anguste ovatte v. 

 lanceolatse medio nervo prominulo in aculeum apicalem producto. Calyx 4-partitus, 

 segmentis latioribus i poll, longis J-j poll, latis late obovatis v. ellipticis apice cuspidato- 

 aculeatis venulis a basi sursum currentibus prominenter auastomosantibus pilis 

 minutissimis capitatis etiamque punctatis obscure puberulis, lateralibus I poll, longis 

 lanceolatis longe acutis membranaceis reticulato-venulosis glauduloso-puberulis. Corolla 

 lilacina extus pubescens pilis apice capitatis glandulosis, tubo ^ poll, longo inferne 

 cylindrico sursum ampliato, limbo 5-lobato patente lobis obovatis obtusis crenulatis 

 anticis 2 minoribus lateralibus exterioribus. Stamina 2 antica perfecta f poll, longa 

 exserta fauci affixa, filamentis validis angulatis basi dilatatis pilosis ; anthera? dorso 

 affixa? sagittatse g- poll, longa? ; staminodia 3 postica acerosa lanceolota \ poll, longa. 

 Discus couspicuus cupulseformis dentatus. Ovarium glabrum loculis 2-ovulatis ; stylus 

 | poll, longus apice dentatus. Capsula ^ poll, longa obovoidea punctata basi vix 

 contracta complanata glabra nitida nigra. Semina 4 v. abortu pauciora orbiculata \ 

 poll. diam. indumento vestita, retinaculis glabris acutis. 



Nom. Vern. Sheitan-ereteh (B.C.S.). 



Socotra. Common on the north slopes of the Haghier range. B.C.S. 

 nn. 399, 408. Schweinf. nn. 553, 576 in lit. 



Disteib. Endemic. 



An interesting novelty, and one of the prettiest flowering plants on the 

 island. Its habit and prickly coriaceous foliage readily distinguish it from all 

 knoAvn species. 



2. B. tetracantha, Balf. fil. in Proc. Roy. Soc. Edin. xii. (1883), 85. Tab. 

 LXVIII. 



Fruticosa nana glabra ramis lateralibus axillaribus verticellatim tetracanthis; foliis crassis lan- 

 ceolatis oblanceolatis v. obovatis apice aculeatis ; floribus axillaribus ; bracteolis pungente- 

 subulatis calyci fequilongis ; staminibus 4, 2 brevioribus ; ovarii loculis 1-ovulatis. 



Suffrutex glaber nanus spinosus radice valido lignoso, caule duro multo brevissimeque 

 ramosissimo cortice griseo, ramis srepe prostratis ultimis paucis elongatis tetragonis 

 leprosis laterales ramulos axillares basi rigidosalbos l~l poll, longos apiceque verticillatim 

 4-spinosos gerentibus spinis divaricatis subulatis albis primum substrigulosis rhacbi 

 sequilongis v. brevioribus rariusdongioribus. Folia lanceolata v. oblanceolata vix petiolata 

 sed versus extremitates ambos angustata apiceque aculeata basi gradatim attenuata f-1 poll, 

 longa 4-1 poll, lata v. sa^pe minora £ poll, longa I poll, lata et obovata v. subelliptica et 

 aculeatim mucronata subcrassa glauca glabra venulis margiuibusque obscure strigulosis. 

 Flores solitarii v. in spicas 2-floras dispositi subsessiles in axillis foliorum nonspiniferum 

 (rarius spiuiferum) superiorum ; bracteee foliacete calyce longiores. Bracteolm 2 trigono- 

 pubulaUe apice aculeatpe basi anguste marginatai subconnat?e sparsim strigulosse. Calyx 

 alte 4-fidus, lobis integris intus strigosis margiue striguloso-eiliatis, anticis posticisque 

 paulum latioribus, exterioribus basi expansis rotundatis sursum longe acuminatis in aculeos 

 productis, interioribus linearidanceolatis apice aculeatis. Corolla f poll, longa, tubo ^ 

 poll, longo basi paulum dilatato supra basim incurvo medio leviter constricto ibique annulo 



