Diastatea micrantha (Kunth) McVaugh

Laurentia maximiliana F. E. Wimmer, Repert.Sp. Nov. 38: 78. 1935. (ScliuUze, herb. Berlin.) Laurentia micrantha var. longibracteata F. E. Wimmer, Revista Sudam. Bot. 2: 104. 1935. Laurentia micrantha var. ovatifolia F. E. Wimmer, Field Mus. Publ. Bot. 13': 476, 1937.
Stem simple or with many ascending branches, very slender to somewhat coarse (maximum size about 3 mm. in diameter at base), green, or purplish below, or sometimes purple throughout, few-50 (75) cm. high, chaffy-pubescent, especially below, or varying to practically glabrous; hairs, when present, nearly uniformly distributed around the terete or angled stem, flaccid and collapsed when dried; plants exceedingly variable in size and pubescence; leaves mostly about 10 on the main stem, the middle and upper ones lanceolate to ovale, acute at tip, narrowed to a margined petiole or a distinct slender petiole as much as 1.3 cm. long, the blades less often sessile, usually 1-2 times as long as broad, up to 2.2 cm. wide by 5.5 cm. long, chartaceous or membranaceous, the pubescence, when present, mostly concentrated near margin, on veins of lower surface, and on upper surface near base, the margin variously serrate with the principal serrations mostly sharp and 5-6 per cm., but sometimes sinuate or coarsely jagged-toothed, or minutely serrulate with as many as 12 teeth per cm., the lower leaves smaller, ovate to orbicular, mostly obtuse and petiolate; inflorescences often somewhat secund, the principal one few-25(30-) flowered, few-25 (30) cm. in length; pedicels 6-27 (42) mm. long in fruit, the distal end often upcurved in fruit, smooth and glabrous (less often ciliate or chafly-hirsute) ; lower flower-bracts lanceolate, resembling reduced leaves; upper bracts narrower, linear to filiform, toothed; lower bracts 0.2-1.5 cm. wide by 1.0-3.5 cm. long; upper ones 0.3-1.5 cm. long; flower 4.5-6.5 (8) mm. long, including hypanthium; corolla dark purplish-blue to pale lilac, pale blue, or white, the tube 2.5-4.0 mm. long, the two upper lobes broadly triangular, about 1.5 mm. long, the lobes of the lower lip rounded-spatulate, about 1 mm. broad by 2 mm. long; filament-tube (3.0) 3.5-4.0 (4.5) mm. long; anther-tube (0.5) 0.7-1.1 (1.3) mm. long, the three larger anthers glabrous or somewhat pubescent; hypanthium in anthesis cup-shaped, mostly glabrous, in fruit becoming conic, slightly higher than broad, 0.5-1 mm. high; capsule narrowly ellipsoid, 1.5-2.5 mm. in diameter by 3-6 (8) ram. long (average size 2 by 5 mm.) ; caly.-lobes linear, usually less than 0.5 mm. in width at base, acute or attenuate, entire or ciliate-toothed, 1.5-3.5 (5.5) mm. long; seeds about 0.5 mm. in length.
TvPB locality: Ecuador ("in Regno Quitensi, prope pagum Puembo, alt. 1300 hex."), Humboldt &■ Bonpland (Field Mus. Neg. 9110!).
Distribution: Mostly at elevations of 1000 to 2700 m., San Luis Potosi and Jalisco to Peru and Bolivia.

Diastatea micrantha (H. B. K.) McVaugh, Bull. Torrey Club 67: 143. 1940.
Ubflia micranlha H. B, K, Nov, Gen. & Sp. 3: 316. 1819.
Ijabelia sublilis H. B. K. Nov. Gen. & Sp. 3: 317. 1819. (Tyrx: from Ecuador, Humboldt & Bon-
pland.) lobelia ruderalis Willd.; R. & S. Syst. Veg. 5: 56. 1819, (Type from "Peru," Utimboldl & Bon-
pland.) Ijihelia IJraha Willd.; R. & S. Syst. Vcg. 5; 67. 1819. Rapuntium micranthum Prcsl, Prfxlr. Moii. Ix>b. 25. 1836. Rapunlium !ublile Prcsl, Prfxlr. Mon. I^ob. 25. 1836.
/Atlia parvi/lora .Mart. & Gal. Bull. Aca<l. Brux. 9>; 41. 1842. (GaUoIti 1070, Brux.!) Ijnbflia minutiJUirum Kunzc, Linnoea 16: 318. 1842. (Based on a ctillivalcd plant.) iMurentia matifolia B. I,. Robinson, Proc. Am. Acad. 26: 166. 1891. (I'rinnle 2985, Gray!) iMurtnlio michoaeana var. ovalifolia B. I,. Robinson, Proc. Am. Ac:ul. 26: 167, as syn. 1891. Juturentia michoaeana B. I,. Roliin.v>n, Proc. Ara. Acad. 26: 167. as syn. 1891. Lobtlia Turckhtimii Vatkc; B. L. Robinson, Proc. Am. Acad. 26: 167, as syn. 1891. iJc/rlmannia micranlha Kuntzc, Rev. Gen. 972. 1891. Uortmannia minuliftora Kuntzc, Rev. Gen. 972. 1891. Dortmannia parviflora Kuntze, Rev. Gen. 973. 1891.
I.aurentia micrantha Zahlbr. Bull. Torrey Club 24: 386. 1897. Not Laurentia micrantha A. DC.
1839. Laurentia peduncidata Brand. Univ. Calif. Publ. Bot. 6: 73. 1914. {Purpus 6705. U. of Calif.!)

Diastatea micrantha là loài thực vật có hoa trong họ Hoa chuông. Loài này được (Kunth) McVaugh mô tả khoa học đầu tiên năm 1940.