Lobelia guatemalensis (B. L. Rob. ex Donn. Sm.) Wilbur

Pratia guatemalensis (Donn. Smith) F. E. Wimmer, Repert. Sp. Nov. 29: 50. 1931.
Cenlropogon guatemalensis B. L. Robinson; Donn. Smith, Bot. Gaz. 20: 4. 1895.
Plants terrestrial, herbaceous, entirely glabrous except for a slight puberulence in the axils of the flower-bracts; stems mostly simple, erect, up to 5 mm. in diameter and at least 40 cm. high; leaves cauline, ascending, stiff-papery when dry, abruptly differentiated from the flowerbracts, the blades ovate or broadly elliptic, 4-9 cm. wide by 10-20 cm. long, usually 2-2.5 times as long as wide, on a stout, narrowly margined petiole 2-6 cm. long, the base of the blade acute, attenuate, the apex abruptly short-acuminate, the margins crenate with 3-4 low teeth per cm.; inflorescence 10-17 cm. long, densely 10-25-flowered; pedicels spreading, stiff, up to 1 .5 mm. in diameter, 35-40 mm. long in fruit, sometimes purplish, each with 2 filiform bracteoles 1-2 mm. long, at or very near the base; flower-bracts linear or oblong (or the lowermost slightly broader, foliaceous), toothed, acute, 1-3 mm. wide, 10-15 mm. long; flower 5-7 cm. long, including hypanthium; corolla purplish-red when dry, glabrous without, puberulent within and at the base of the lower lip with colorless inflated hairs, the tube 23-30 mm. long, broadest at base, narrowed slightly to the apex, slightly falcate, the dorsal sinus deeper than the lateral ones, extending to a point about 2 cm. from the base or less, the two upper lobes subulate, erect, long-attenuate, 4—6 mm. wide at base, 20-27 mm. long, the three lower lobes united into a distinct lower lip, the lobes linear or narrowly elliptic, acute, 1-2.5 mm. wide, 8-18 mm. long; filament-tube 35-41 ram. long, the filaments densely clothed their whole length with inflated hairs like those of the corolla, distinct at base, entirely free from the corolla; anther-tube 7.5-8.5 rara. long, dark bluish-gray when dry, the two shorter anthers densely white-tufted at tips, the anthers otherwise glabrous, or sparsely tufted at base and near apex and occasionally with stifl hairs on the backs; hypanthiura in anthesis short-campanulate, often purplish, in fruit enlarging slightly, about as wide as high, about 6 mm. in diaracter, forraing a rim about 2 mm. wide above the attachment of the ovary; mature fruit not seen; calyx-lobes deltoid or narrower, blunt or subacute, obscurely denticulate, 4-5 mm. broad at base, 5-7 mm. long; seeds not seen.
Type locality: "Pansamald forest, Depart. Alta Verapaz, Guat.," ran Turckheim (pi. guat. J. D. Sm. 728) (US!).
Distribution: Central Guatemala (Alta Verapaz, Baja Verapaz).

Lobelia guatemalensis là loài thực vật có hoa trong họ Hoa chuông. Loài này được (B.L.Rob. ex Donn.Sm.) Wilbur mô tả khoa học đầu tiên năm 1991.