Eryngium sparganophyllum Hemsl.

Eryngium sparganophyllum Hemsl. in Hook. Ic. pi. 2508. 1897
Eryngium longifolium sensu A. Gray, PI. Wright 2: 65. 1853. Not E. longifolium Cav. 1793.
Rather slender, caulescent, glabrous perennials, 4—12 dm. high, from a short tuberous rootstock bearing a fascicle of fleshy-fibrous roots, the stems solitary to several, erect; basal leaves numerous, linear to linear-lanceolate, 1-9 dm. long, 5-15 mm. broad, broadest at the base, attenuate at the apex, entire or obsoletely spinulose-dentate with teeth 2 mm. long or less, axillary spines absent, the venation parallel; sheaths broader than the blades, vaginate or plane, 2-10 cm. long; cauline leaves few, like the basal but reduced and sessile, the lower alternate, ascending, the upper opposite; inflorescence divaricately cymose, or trifurcate, or rarely simple, the heads rather large, numerous to few or solitary, pedunculate, the flowers numerous; heads blue, ovoid or ovoid-oblong, 15-25 mm. long, 10-15 mm. broad, rounded at the base; bracts 8-12, herbaceous, loosely spreading to reflexed, linear, 5-15 mm. long, pungent, entire, much shorter than the heads; bractlets lanceolate, 5 mm. long, curved, pungent, entire, slightly exceeding the fruit; coma wanting; sepals ovate, 1.5-2 mm. long, obtuse, apiculate; petals oblong, about 2 mm. long; styles slender, exceeding the sepals; fruit ovoid, 3-4 mm. long, the calycine scales and those of the angles lanceolate, up to 1 mm. long, those of the surfaces smaller and papillose.
Type locality: Los Playos Springs, near the Sierra de Los Animos, New Mexico, C. Wright 1103.
Distribution: New Mexico to Jalisco (Palmer 294, Pennell 18,296).

Eryngium sparganophyllum là một loài thực vật có hoa trong họ Hoa tán. Loài này được Hemsl. mô tả khoa học đầu tiên năm 1899.