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leaflets, and much larger fruit, is always scapose, occasionally has calyx teeth, and 
its umbels are stouter, with much more numerous rays. 
Ever since our study of Eulophus and the related genera in 1886-’87 we have felt 
dissatisfied with Bentham and Hooker’s treatment of this group in the Genera 
Plantarum. In the Revision of Umbellifers we attempted to express our idea of 
the relationship of the forms found in the United States. This led to the cutting off 
as anew genus (Museniopsis) /. terana Benth. & Hook., which had been originally 
placed by Dr. Gray in a separate section of Tauschia, and the combining with 
Eulophus americana the two western species of Podosciadium (1°. californica and P. 
botanderi) along with two undescribed species (/. pringlei and E. parishii). This 
made what we then thought and still think a very natural genus of 5 species. As 
we then stated, this genus is remarkably well defined, being readily recognized by 
such external characters as its elongated linear entire leaflets, fascicled tubers, con- 
spicuous involucels, prominent calyx teeth, conical stylopodium, and long recurved 
styles. Its nearest alliance is to Pimpinella, from which it differs, not only in most 
of the characters just noted, but also in the concavity of the seed face. The broad 
concavity of the seed face, as well as its comparative shallowness, is one of the 
marked characters of this genus, and not only separates it from certain allied genera, 
but also excludes from it the Mexican species which have been referred to it. These 
are FE. ternatus and EL. tenuifolius, at the time referred to above just described by Dr. 
Sereno Watson, and F£, peucedanoides Benth. & Hook. 
This last species has also been referred to Smyrnium, Silaus, and Cnidium. Since 
our Revision was published in 1888, material has come to hand which shows 7 addi- 
tional Mexican species. A careful study of a very large supply of material has led 
us to combine the Mexican species of Eulophus with our single border species under 
the name of Museniopsis. It is true that M. terana is hardly a typical representa- 
tive of the genus, but is more like an outlying form of a genus whose center of dis- 
tribution is somewhere in Central Mexico. The species grade easily through , 
ternaia into the taller caulescent Mexican species, Museniopsis is much nearer 
Arracacia and Velwa than Eulophus. Dr. Watson! thought it could be “ separated 
only by its smaller obsoletely ribbed fruit with numerous irregular vittie.” The 
confusion of Museniopsis with Eulophus is probably due partly at least to the figure 
of the fruit section of Eulophus as originally published in De Candolle.2 The seed 
is there shown as strongly involute, while Dr. Torrey’s sketches and our examination 
of many carpels show a seed with a broad face and but slightly concaved. 
The following key will be found useful in determining the species: 
A. Acaulescent or nearly so; peduncles single, terminal, and elongated; involucels 
toothed, ! 
B. Leaflets ovate, toothed; peduncles 7 to 1.2 dm. long; fruit obtuse. 
1. Museniopsis texana (Gray) Coult. & Rose, Rev. Umb. 123 (1889); Tauschia 
texana Gray, Pl, Lindh. ii, 211 (1850); HLulophus tecanus Benth. & Hook. Gen. Pl. i, 
882, 885 (1867). 
BB. Leaflets filiform; peduncles 3 dm. long; fruit acutish. 
2. Museniopsis tenuifolia (Watson); Hulophus tenuifolius Watson, Proc. Amer, 
Acad. xxiii, 276 (1888). 
AA. More or less caulescent, much branched; peduncles numerous, both terminal and 
lateral, short; involucels either wanting or filiform and entire. 
C. Biennials from small globose or spindle-shaped tubers. 
D. Radical leaves with ovate, toothed leaflets; involucre and involucels present. 
3. Museniopsis zgopodioides (II. B.K.); ? Smyrnium wgopodioides 1. B. K. Nov. 
Gen. et Sp. v,16 (1821). 
Biennials from fusiform tubers; stems slender, 4 to 12 dm. high, branching above; 
radical leaves with petioles 3 to 5 em, long, twice ternate, with ovate toothed leaf- 
' Proce. Amer. Acad, xxii, 415. 2? Memoire Ombelliferes, pl. 2, H, 3. 
