Ignacio region claim it is an edible green and call it 
“sene 
This deep rooted herb is restricted to a narrow inter- 
zone in the moist upland meadows, between the low, 
wet area (often occupied by standing water during parts 
of the rainy season) with Plantago and Ranunculus spe- 
cies, and the slightly elevated and drier area with J'agetes 
lucida. Even though this umbel has a deep, vertical root- 
stock (over 50 cm. long with a relatively constant di- 
ameter) which may be well adapted to environmental 
changes, such human-related activities as grazing, culti- 
vation, gully and sheet erosion, draining and soil com- 
paction in these accessible meadows threaten to destroy 
the few known populations of this curious plant. 
In the published key to the species of Tauschia 
(Mathias & Constance, 1944, pp. 81-82), the new taxon 
would key to either 7". tenuwifolia (S. Wats.) Math. & 
Const., a little known Chihuahuan plant, or to 7°. mari- 
ana (S. Wats.) C. & R. ex Drude (= 7\. decumbens 
(Benth.) C. & R. ex Drude), which occurs from México 
to Michoacan. It differs from both, however, by its lack 
of an involucel and its smaller fruit with broad, obtuse 
costae. In addition, 7". tarahumara is unlike 7". tenui- 
folia in lacking a densely fibrous stem base and in its more 
numerous but shorter rays. From 7°. decumbens, 7. 
tarahumara may be distinguished by its lower stature, 
broader leaves with narrower divisions, and red-purple 
flowers, in addition to its geographic range. 
Eryngium Gentryi Constance & Bye sp. nov. 
Plantae perennes graciles caulescentes haud ramosi 
1.8-5 dm. altae ex caudice horizontali gracili; folia pauca 
alternata disticha lineari-lanceolata 8-20 cm. longa, 2-5 
mm. lata, transverse septata, margine serrulato inte- 
grove, venis parallelis, vaginis amplexicaulibus latitudi- 
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