PHANEROGAMS— PROFESSOR BAYLEY BALFOUR. 117 



is readily distinguished by, amongst other characters, the absence of the 

 enlarged calyx lobe. 



6. GAILLONIA. 



Gaillonia, Ach. Eich. in Mem. Soc. Hist. Nat. Par. v. 153, t. 15, f. 3 ; Benth. et Hook. Gen. PI. 

 ii. 144. 



A small genus of northern Africa and western Asia, represented in Socotra 

 by three endemic species. 



1. G. (Microstephus) tinctoria, Balf. fil. in Proc. Eoy. Soc. Edin. xi. (1882), 

 836. 



Herba a collo radicis tortuose ramosa, ramis nigris, internodiis brevibus puberulis ; foliis 

 crassiusculis auguste spathulatis, sparse et brevissime puberulis ; stipulis polymorpbis ; 

 floribus solitariis axillaribus breviter pedicellatis ; calyce 5-lobato, lobis 2 magnis, 2 

 minoribus, 1 mimino ; corolla extus scabridula ; stylo longe exserto. 



Herba basi lignosa pedalis v. sesquipedalis ramosissima radioe corticaliter rubro-tinctorio. Rami 

 tortuosi internodiis brevibus ; ramuli subtetragoni scabriusculo-puberuli. Folia J— § poll, 

 longa gV poll, lata basi ramulorum lateralium ssepe congesta crassiuscula omnia anguste 

 spatbulata basi multo-attenuata scabriuscula siccitate nigricantia. Stipulce vagina brevi 

 minute dentata. Floras fere f% poll, longi solitarii axillares ; pedicelli vix ^ P°H- longi 

 puberuli. Calyx persistens non-accrescens 5-lobatus puberulus, lobis 2 magnis subulatis, 

 2 minoribus, 1 minimis. Corolla £ poll, longa calycem longe excedens tubulosa extus 

 scabridula, limbo r *g poll, longo. Stamina corollae asquilonga. Stylus bifidus longe 

 exsertus. Fructus ignotus. 



Socotra. In tufts on rocks near Galonsir. B.C.S. n. 321. 



Quite a distinct species of the section including those without accrescent 

 calyces. It has no very marked allies in the genus. The outer portion of the 

 root is reddish in colour, and when fresh dyes the fingers. It is made use of 

 by the inhabitants of Socotra as a dye. 



2. G. (Microstephus) puberula, Balf. fil. in Proc. Roy. Soc. Edin. xi. 

 (1882), 836. 



Suffruticosa rigida dicbotome ramosa puberulo-tomentosa internodiis elongatis ; foliis inferi- 

 oribus lanceolatis v. oblanceolatis v. obovatis acutis v. obtusis revolutis sparse puberulis, 

 superioribus linearibus ; stipulis polymorpbis; floribus axillaribus v. terminalibus solitariis 

 v. in cymas trifloras dispositis; calycis dentibus sub?equalibus non-accrescentibus ; corolla 

 extus pubescente ; staminibus s^epius inrequalibus ; stylo incluso ; fructu dentibus calycis 

 coronato dense hirsuto. 



Suffrutex rigidus virgatim bipartim pauciramosus basi lignosus 2-3-pedalis. Rami tenues 

 elongati recti tetragoni internodiis longis sursum dilatatis deorsum versus nodos attenuatis, 

 juveniles puberuli, seniores epidermide albido-tomentoso. Folia remota siccitate nigra, 

 basalia ^ poll, longa £ poll, lata lanceolata v. oblanceolata v. ovata acuta v. obtusa basi 

 attenuata margine revoluta sparsim puberula, superiora angusta linearia. Stipulce vagina 

 brevi setis duobus brevissimis v. obsoletis. Floras non-involucellati solitarii v. in cymas 



