FERNALD, — GENUS PECTIS. 83 
& Deppe fide Lessing); Jatisco, Tequila (Palmer, 1886, no, 418); 
Oaxaca (Galeotti fide Hemsl.); Guerrero, Chilpancingo (Humboldt 
& Bonpland fide HBK.), Acapulco (Henke fide DC.); Nicaracua 
(C. Wright) ; Costa Rica, Guanacaste ((Ersted). 
Var. villosior, Coult. Low with thick woody caudex: stems and 
leaves villous or even lanate; the involucral bracts puberulous or villous. 
— Bot. Gaz. xx. 52.— Oaxaca, between Tatolapa and San Carlos 
(Nelson, no. 2550); Guaremata, Santa Rosa (Heyde & Lux in Exsic. 
J.D. Smith, nos. 3401, 3413). 
P. Liebmannii, Schz. Bip. Suffruticose at base, the elongated 
slender procumbent branches 2 or 3 dm. long, the whole plant including 
leaves and involucre canescent-tomentose or even lanate on the young 
parts: the thick obovate-oblong revolute leaves cuspidate-mucronate, 
about 2 em. long, 1 cm. or less wide, punctate beneath, with many small 
black dots, and 2 to 4 (according to Klatt 6 or 8) long basal set: pe- 
duncles solitary, terminal or axillary, 6 mm. or less long, 2-3-bracteate : 
involucre 6 or 7 mm. high, about 30-flowered; the 6 or 8 linear-oblong 
Tosy-tipped bracts plane or somewhat involute, scarious on the margins, 
canescent on the back, and slightly thickened below: rays yellow, ovate- 
lanceolate, 3 or 4 mm. long: disk-pappus 20 or 30 unequal sordid up- 
wardly scabrous sete, the longest 4 or 5 mm. long ; ray-pappus wanting: 
akenes narrowly fusiform, 3 or 4 mm. long, minutely pubescent or gla- 
brate. — Schz. Bip. in Hemsley, Biol. Centr.-Am. Bot. ii. 226 & in 
Klatt, Leopoldina, xx. 92 (reprint 5). Southwestern Mexico. “ Lag. 
Lapotengo ” (Liebmann, no. 471 Jide Klatt 1. c.) ; Jatisco, San Augustin 
(Liebmann, no. 467) 
* * * * Aquatic subsimple plant with naked leaves and subsessile heads. 
ve P. aquatica, Watson. Stems smooth, elongated, simple, or sparingly 
branched ; leaves few, mostly above, thick, linear, entire, blunt, 2 or 
3 cm. long, rarely with a few faint marginal glands: heads solitary in 
the axils, becoming recurved with age: involucre about 1 cm. high, of 5 
mbricated flat obtuse purple-tipped blunt bracts, about 12-flowered, the 
flowers mostly included: rays none: pappus of 10 or 12 unequal serru- 
late bristles, the longest 2 mm. long and somewhat thickened, all ascend- 
ing or converging at the tips: akenes compressed-angulate, very slender, 
8 mm. long, with a long-attenuate base, appressed-setose with rufescent 
hairs. — Proc. Am. Acad. xxiii. 279. CutmuaHva, pine plains, base of 
Sierra Madre (Pringle, no. 1296). A unique species, the stems floating 
nds. 
