(158) 
2. CENTRATHERUM PUNCTATUM Cass. Dict. Sci. Nat. 
7: 384. 1817 
Amphirephis artstata H.B.K. Nov. Gen. 4: 32. 1818. 
h American specimens of this species have been seen, 
and it is admitted to the North American flora only on the report 
of Seemann,* who listed it from the Isthmusof Panama. The fol- 
lowing characterization is taken from Colombian plants, Holton 
jor and André 1727, in the Gray Herbarium 
Erect, 4 high, stem puberulent; leaves firm, lanceolate or 
ohlonslanceolate, 2-3, cm. long, 4-7 mm. wide, acute, serrulate or 
entire, attenuate at base into a margined petiole, glabrous above, 
puberulent beneath; outer scales of the involucre similar to the 
leaves, but little exceeding the pale intermediate scales pubescent 
near the tip, abruptly narrowed into an awn 2-4 mm. long; inner 
scales obtuse or acute, spinulose- Pena mucronate or short- 
awned. 
Type locality: Isthmus of Panama. 
Distribution: Panama and Colombia. 
3. CENTRATHERUM MuTICUM (H.B.K.) Lessing, 
innaea 4: 320. 1829 
enka ait H.B.K. Nov. Gen. 4:32. 1818. 
m pubescent; leaves rather thick, pubescent on both sides, 
co serrate, ek ally attenuate at base, 1.5-2 cm. long, 5-7 
mm. wide; outer involucral scales equaling or a little longer ie 
the heads, the intermediate acute or with short awns, the inner 
obtuse to rounded, not slandularciliate arachnoid or ae 
glandu 
Type iccaliiye *¢ Nova Andalusia.” 
Distribution: Mexico (fide Kew Index), Colombia, Ofzo. 
4. PIPTOCARPHA R. Br. Dict. Sci. Nat. 41: 109. 1826 
Carphobolus Schott ; nee Syst. Veg. Cur. Post. og. 1827. 
Monanthemum Griseb. FI. t. W. Ind. 354. 1864. 
Heads few- (3~20-) es aggregated in axillary or terminal 
ribbed; pappus-bristles in two se eries, the inner long, equal, the 
outer much shorter, unequal, inconspicuous or apparently in some 
* Bot. Voy. Herald r4o. 
