309 
Rhodosciadium dissectum Coult. & Rose, sp. nov. 
Stems from fusiform roots, 3.5 to 7.5 dm, high; leaves ternately dissected, ulti- 
mate segments linear, entire or few-toothed, glabrous above, scabrous beneath on 
the veins, as also the petioles and rachis; involucre wanting; involucels few, linear, 
a little longer than the pedicels; rays of the umbel few (3 to 6), short (12 to 18 min. 
long); flowers purple; wings of the fruit rather unequal, often very narrow or 
becoming as broad as body. 
Collected by Mr. C. G. Pringle on calcareous hills, Las Sedas, altitude 6,000 feet, 
August 2, 1894 (No, 1764). 
Rhodosciadium glaucum Coult. & Rose, sp. nov. 
Stem from somewhat tuberous roots, 9 din. high, purplish and somewhat glaucous, 
glabrous throughout, or in some species more or less scabrous; radical leaves some- 
5 to 10 em. long; stem 
fod 
times on petioles 8 din. or more long, with leaflets often 7 
leaves twice or thrice ternate; leallets lanceolate, sharply serrate, acuminate, 5 cm. 
or less long; upper leaves much reduced, the inflated scarious petiole appearing 
conspicuously ; inflorescence much branched, irregular, peduncle either wanting or 
more or less elongated; flowers yellow; involucre of broad scarious bracts tipped 
with linear leaf-like appendages; involucel bractlets tiliform, longer than the pedicels; 
rays somewhat unequal, 2 to 3.7m. long; pedicels 6 mm. long; fruit 6 to8 mm. long. 
Collected by Mr. C.G. Pringle on foothills above Oaxaea, 7,000 feet altitude, June 
20, 1894 (No. 5539); hills above Sierra de San Felipe, August 23, 1894 (No, 4823), and 
Salome Canyon, altitude 4,000 feet, November 2, 1894 (No. 5541); also by Mr. E. W. 
Nelson, near Reyes, altitude 6,000 to 7,500 feet, October 17, 1804 (No. 1711); Valley 
of Oaxaca, altitude 6,000 feet, September 20, 1894 (No. 1484); also by Rev. Lucius C,. 
Smith, at the Rancho de Calderon, 5,000 teet altitude, September 10, 1534 (No. 255). 
Rhodosciadium glaucum lineare Coult. & Rose, var, nov. 
Like the type, but with more simple leaves, the leatlets linear with remote teeth, 
It appears to be connected with the type through certain forms of Mr, Pringle’s 
No. 4823. Collected by Mr. E. W. Nelson in the Valley of Oaxaca, at the base of Sierra 
de San Felipe, September 1, 1804 (Nos. 1189 and 1193), and a single specimen obtained 
by Mr. C. G. Pringle, June 20, 1894, from the mountains of Oaxaca, altitude 7,000 feet, 
with No. 5539, , 
Spananthe paniculata Jacq. Coll. ili, 247 (A789). 
Collected by Mr. E. W. Nelson in the vicinity of Choapam, 3,800 to 4,500 feet alti- 
tude, July 28 and 29, 1804 (No. 905) 5 and between Tlapa and Ayusinapa, Guerrero, 
4,500 to 5,700 feet altitude, December 13, 189-4 (No. 2101). 
Tauschia nudicaulis Schlecht. Linniwa, ix, 608 (1831). 
Low caulescent or acaulescent, much branched at base from a long slender tap- 
root; radical leaves forming a rosette at the base of the stem, once or twice pinnate; 
leatlets 6 to 18 mm. long, strongly toothed or cleft; peduncles slender, 2.5 em, or less 
long; involucre wanting; bractlets of the involucels several, rather conspicuous, 
3-cleft and the lobes often toothed or cleft; pedicels short, 2mm. long; fruit oblong, 
obtuse, 4mm. long; styles long, stylopodia wanting; oil-tubes solitary in the inter- 
vals, occasionally a shorter accessory one, 4 on the commissural side; seed strongly 
involute, with closed sinus and inclosing a central cavity. 
Collected by Mr. C.G. Pringle in the State of Mexico on Sierra de las Cruces, 
altitude 10,000 feet, August 28, 1893 (No, 5210), and July 29, 1894 (No. 4744). 
The genus Tauschia, based on the above species, is very near certain forms of 
Arracacia, especially 4. decumbens, A, edulis, and A. mariana. If the genus is retained 
these species must undoubtedly be referred to it. 
Tauschia coulteri Gray, as shown above is a good Arracacia, while 7. texana is the 
type of the genus Museniopsis. 
