HELIANTHEMÜM Tuberaria.
Plantain-leaved Sun-Rose.
Sect. III. Tuberaria. Calyx 5-sepalus, sepalis externis mi-
noribus vel majoribus sæpè patulis. Petala lutea, sæpè basi ma-
culâ atropurpureâ notata, integra vel denticulata, serratà. Stamina
niiineresa pistillo multo longiora, Stylus rectus subnullus. Stigma
capitatum. Capsula trivalvis, Semina minuta flavescentia. .Radices
perennes lignosce sen herbacece ttnnuce. Caules herbacei erecti
.sext adscendentes. Folia trinervia opposita exstipulata, superiora
interdùm alterna, soepiùs stipulata, stipulis longis linear i-aeutis.
Flores subpaniculati vel raceniosi secundi bracteati vel ebracteati.
DiC. prodr. 1. p. 27,0. .
* Perennia raro fruticosa, foliis omnibus exstipulatis, caulibus basi
pilosis supernè g labris, jloribus paucis bracteatis subpaniculatis.
H. Tuberaria, perenne, ramoso, caulibus adscendentibus subsimpli-
cibus, foliis radicalibus in petiolum desinentibns ovato-oblongis
trinerviis tomentoso-hirsutis canescentibus subtils nervosis supra
sulcatis ; caulinis sessilibus subglabris lanceolatis : summis alter-
nis, pedicellis basi bracteatis paucis subpaniculatis calyce triplo
longioribus, calycibus glabris nitidis, petalis obovatis distinctis
patentissimis.
Helianthemum Tuberaria. PC. prodr. 1. p . 270. Pers. syn. 2. p. 77.
Mill. diet. n. 10. Willd. enum. 2. p. 570. Spreng. syst. 2. n. 587.
jCistus Tuberaria. Lin. spec. 74 L. Cavan, icon. 1. p. 65. t. 67. Willd.
sp. pi. 2. p. 1197.
Perennial, herbaceous, branching round m all direc
tions : branches short, very hairy at the base: flowering
ones lengthening out, ascending, quite smooth, ol a
pale glaucous green. Leaves near the root opposite,
oblongly-ovate, obtuse, attenuated at the base and down
the petiole, strongly 3-nerved underneath, and furrowed
with 3 deep channels on the upper side, slightly ca-
nescent, clothed underneath with a short white tomen-
tum, the nerves very hairy: upper side hairy and
rough, the hairs decumbent, and the roughness occasioned
by innumerable minute warts that are scattere
all over the surface. Petioles deeply channelled on the
f 2