ne 
MONOGRAPHIA POLYGALACEARUM. | 387 
apicem dilatatus, vittiformis. Stigmata sacculiformia 1. e. pars terminalis dorsalis 
ligularis et oblique papillosa, pars inferior etiam membranacea saccula duo formans 
emarginatione haud profunda separata et quam pars dorsalis 3plo brevior. In 
emarginatione corpusculus papillosus rotundatus, punctiformis observatur. Capsula 
alis brevior ac angustior, late elliptica, emarginata, angustissime alata, glabres- 
cens, membranacea. Semina globosa, hirsuta, nigra vel grisea, parva; caruncula 
capitelliformis semini superposita. 
Habitat in Angola (Welw. iter angolense, 1032) Mukenge : Pogge, n° 572 (Hb. 
Berol.). 
IV. Arenariæ. 
P. ARENARIA, Willd. 
Racemi sessiles capitati, subsphærici, terminales vel in dichotomia ut flos definita 
sessilis; alæ ovatæ, pilosæ ; petala superiora basi cuneata, medio contracta, limbo 
dilatato et subquadrangulari. 
Willdn. Sp. t. IT, p. 880 ; DC. Prodr. I, p. 126; Oliv. F1. of trop. Afr. I, 
p. 129. — P. nutans Hook. FI. Nigrit. 222. 
Tab. nostra XXVII, fig. 35-36. 
Radix perpendicularis, tenuis et simplex, vel crassior tum ramosa, 5-12 cm. 
longa, ad 5 mm. crassa, lutea vel grisea. Caulis simplex, 6-30 cm. longus, aut à 
basi divaricate et repetite pseudo bi vel trichotomus, leviter striatus, fistulosus et 
hirsutus. Folia varia, linearia, obovata, oblonga, elliptica, herbacea, 1-4 cm. longa, 
0,3-1,5 cm. lata, caulium simplicium, sub racemo terminali, aliis inferioribus 
duplo longiora et quasi involucrum formantia, caulium ramosorum sub quoque 
racemo plus minusve condensata, omnia obtusa nec mucronata. Racemus aut 
unicus in caule simplici, aut racemi plures breviter pedunculati i. e. quasi sessiles 
inter ramos, quos formant pseudodichotomiam, capitati, globosi nec cylindrici, sub- 
sessiles, tam alti quam lati 1-2 cm. Flores cca. 5 mm. longi, densiflori, floribus 
reflexis. Sepala exteriora inæqualia, superius ‘/, majus, ellipticum, vel ovatum, 
dorso et margine longe ciliata, herbacea. Alæ subunguiculatæ, late ovatæ, subor- 
biculares, nervis parce anastomosantibus dorso et margine ciliatæ, quam corolla 
TOME XXXI, 2° PART. 43 
