MR. J. BALL’S SPICILEGIUM £FLORE MAROCCANE. 527 
Mar. occid.—? Folia radicalia fere certe huc referenda prope Agadir ab 
indigenis lecta anno 1871! 
Mar. merid.—Occurrit haud raro in saxosis aridissimis planitiei Maroc- 
cane. Proy. Shedma plurimis locis! Prope Seksaoua ! 
Ar. Geog. Africa borealis ad fines reg. desert. Nascitur etiam in 
insula Cypro fide Sibthorp (Prod. Fl. Gr, ii. 158); sed a recentioribus 
non visa, nec enumeratur in Boiss. ‘ Fl. Orientali.’ 
Vidimus tantum sp. deflorata et subexsiccata. Floret verisimiliter hieme 
vel ineunte vere. 
CENTAUREA CossoniANa (Ball in Journ. Bot. 1873, 369), = Rhapon- 
ticum caulescens (Coss. in Bull. Soc. Bot. Fr. xx. 251). 
Descriptionem Cossonianam proferre licet : 
* Planta perennis, forma foliorum Rhaponticum acaule exacte referens. 
Caudex crassus in radicem fusiformem abiens, superne basi petiolo- 
rum emarcidorum squainzformium stipatus. Caules 1 vel 3-4, folia 
plus minus superantes vel brevissimi, simplices, erecti, teretes, striati, 
pube arachnoidea detersibili donati, demum glabriusculi, folia 1-2 ge- 
rentes. Folia supra pubescenti-floccosa, subtus cano-tomentosa ; 
radicalia seepius plurima, petiolata, pinnatisecta segmentis ambitu 
oblongo- vel ovato-cuneatis inciso-pinnatifidis in rachim alato-folia- 
ceum hine inde dentatam decurrentibus ; caulina 1-2, inferius segmen- 
tis sepe integris, superius ad petiolum squameformem reductum. 
Capitula magna, apice caulium solitaria, foliis floralibus haud inyolu- 
crata. Involucrum ovato-campanulatum, foliolis pluriseriatis arcte 
imbricatis, chartaceis, dorso superne subherbaceo striatis, apice in ap- 
pendicem scariosam ovatam vel oblongo-lanceolatam irregulariter lace- 
ram tenuissime ciliatam dilatatis, inferioribus multo minoribus lanceo- 
latis dorso pubescenti-floccosis, mediis oblongo-lanceolatis, interioribus 
lanceolato-linearibus. Receptaculum piliferum pilis acheeniis longio- 
ribus. Flosculi omnes hermaphroditi, equales, pallide purpurascentes ? 
tubo longissimo, limbo ultra medium 5-fido laciniis angustis lineari- 
bus. Filamenta papillosa. Anthere hasi sagittate, auriculis conti- 
guis connatis, caudis integris vel vix laceris, appendice terminali 
oblonga obtusa. Styli rami erecti, connati imo, apice obtusiusculo 
tantum liberi. Achenia glabra, areola insertionis obliqua, oblonga, 
compressa, obsolete pluristriata, superne paullulum contracta margine 
prominulo brevissimo annulzeformi denticulato coronata. Pappi albi, 
tubum flosculorum superantis set@ pluriseriate, valide scabre, fere 
barbellate, sensim longiores, exteriores multo breviores, interiores lon- 
giores conformes.” 
Mar. occid.—Monente cel. Cosson hee planta nuper a mulione Ibrahim 
in monte Djebel Hadid, haud procul Mogador, lecta fuit. 
Mar. merid.—Primus hane stirpem legit Balansa in monte Djebel Orguis 
prope Imintenout. Legimus formam subacaulem in saxosis prope 
