1218 A couple of hours' Herborization at Aden. [Dec. 



Plumb aginece. 



Statice lanceolata. — Ramis vaginis foliolorum persistentibus 

 dense imbricatis foliis lineari — lanceolatis obtusis acutisve crassis glabris 

 integerrimis in petiolum amplexicaulem longe attenuatis, paniculis axilla- 

 ribus ramosis, floribus in ramulis ultimis sessilibus secundis, bracteis 

 persistentibus externis ovatis, intimis subrotundis margine lato scarioso. 



Named provisionally. 



Nyctajiuece. 



Boerhaavia dichotoma, Valil? Panicula ramosissima aphyllapedi- 

 cellis filiformibus, stam : 3, fructibus, 5 costatis, pyriformibus. 



Euphorbiacece. 

 Euphorbia arillata. — Glaberrima ramis prostratis, teretibus, foliis 

 oppositis insequalibus integerrimis breviter petiolatis lineari — oblongis 

 obtusis mucronulatis, stipulis 2-setaceis, pedunculis axillaribus bractea- 

 tis bifloris, bracteis petiolatis rotundis, involucri limbo 8-fido, segmentis 

 4 brevioribus ciliatis, 4 unguiculatis explanatis margine piano glandula 

 oblonga medio compressa concava, fl : $ 1 — 6. Cum pedicellis abortivis 

 linearibus scariosis barbatis intermistis, fl. 5 1, fructu nutante glabro, 

 stylis 3-brevibus coccis 3-dorso acutis a basi facile dehiscentibus semine 

 sub-oblongo angulato testa veteriore tenui, demum arilliformi lacera alba, 

 interiore rubra. 



This considerably resembles an Indian species, which I believe to be 

 Roxburgh's E. Chamecesyce, which has similar seeds, but in those I 

 have examined the outer testa does not separate of itself in the elegant 

 manner it does in my Aden plant. It likewise differs in the leaves 

 being serrated near the apex. I should not however be indisposed to 

 consider them only as varieties of the same form, and a further exami- 

 nation of Arabian specimens would be required to decide the point. 



Euphorbia systyla. — Erecta glabra dichotoma, ramosa, foliis petio- 

 latis angusti — ovatis vel lin-oblongis, inferioribus oppositis, superioribus 

 alternis, capitulis axillaribus solitariis subsessilibus, involucri tubulosi 

 segmentis 4-herbaceis obtusis pubescentibus, 4 stipitato glandulosis 

 trapezioideis latcribus erosis, fl. $ 4-5, fertilibus et sterilibus pubes 

 centibus, $ puberulo declinato, stylis 3 longe coalitis ad apicem tantiun 

 libcris, bifidis pilosis fructu erecto stipite cum involucro circumscisso 

 quasi annulato coccis dorso rotundatis puberulis, seminibus exarillatis 



