CRUCIFERZ. 31 
6. THELYPODIUM. 
Thelypodium, Endl. Gen. Plant. p. 876 ; Benth. et Hook. Gen. Plant.i. p. 81. 
Pachypodium, Nutt. in Torr. & Gray, Fl. N. Am. i. p. 96, nec Webb. 
Macropodium, Hook. Bot. Mise. i. p. 341, t. 68. | 
A genus of about ten or twelve species, natives of California and Mexico. 
1. Thelypodium longifolium, Watson, Bot. King’s Exped. p. 25. 
Streptanthus longifolius, Benth. 
CaLirorniA and New Mexico to—Sourn Mexico, Aguas Calientes (Hartweg, 52), 
Zimapan (Coulter, 687). Hb. Kew. 
2. Thelypodium petiolatum, Hemsley, Diag. Pl. Nov. parsi. p. 2. (Tab. I.) 
Foliis caulinis longe petiolatis ovato-cordatis serratis pubescentibus, floribus racemosis, siliqua 
stipitata tereti, cotyledonibus oblique incumbentibus. 
Herba erecta (biennis ?) , ramosa, 2-3 (magisve ?) ped. alta; ramis lignosis, teretibus, glabrescentibus. 
Folia radicalia mihi ignota, caulina longe petiolata; lamina membranacea, cordata, ovata vel 
supremorum lanceolata, 14-2 poll. longa, acuta, serrata, plus minusve pubescente ; petiolo 
gracili, 4-14 poll. longo. Flores glabri (lilacini?), 3-4 lin. longi, breviter graciliterque pedi- 
cellati; racemi elongati, paniculati, ebracteati; sepala basi wqualia, oblonga, obtusa; petala 
spathulati-oblonga (? ut in icone patentia); filamenta inappendiculata, basi leviter dilatata ; 
anthere recta, sagittate ; stylus brevis; stigma emarginatum. Siliqua teres, glabra, brevissime 
stipitata, ad 1-14 poll. longa; semina numerosa, uniseriata, oblonga, cotyledonibus plus minusve 
oblique incumbentibus. 
Sout Mzxico, Zimapan (Coulter, 684), Mount Guadalupe, near the city of Mexico 
(Bourgeau, 762). Hb. Kew. 
This is a very distinct plant; but there was some difficulty in deciding what genus 
it should be placed in. Dr. A. Gray mentions (Proc. Am. Acad. Arts and Sciences, vi. 
p. 188) Coulter’s number 684, and states that it is a strict congener of Lodanthus pin- 
natifidus ; but the latter has perfectly accumbent cotyledons. On the whole our plant 
agrees very well with Thelypodium as defined by Watson (‘ Botany of California,’ 
i. p. 87), which includes Pachypodiwm of Nuttall. 
EXPLANATION OF TAB. I. 
Portions of Plant, natural size ; the fruiting specimen from Bourgeau’s no. 762, and the flowering 
specimen from Coulter’s no. 684. 
Fig. 1, a flower ; fig. 2, a pistil; fig. 3, a capsule ; figs. 4, 5, and, 6, embryos in various positions. 
(All magnified.) , 
3. Thelypodium wrighti, A. Gray, Pl. Wright. i. p. 3. 
Norta Mexico, along the Rio Grande, Nuevo Leon (Schott). 
4. Thelypodium, sp.t 
SoutH Muzxico, Santa Fé (Bourgeau, 690). Hb. Kew. 
