V. PLANTS WRIGHTIAN^. 39 



not in all respects well described by Kunth. The stigma is open and cucullate 

 in the centre ; the porrect lower lip terete, short, and with a capituliform papillose 

 apex : the upper is very short and dentiform, and barbate with a penicillate tuft of 

 hairs, which Kunth everlooked. The wings in our plant are a little more obovate. 

 Flowers about as large as those of P. Austriaca, in equally lax spikes or racemes, 

 greenish-white. Crest of four 2-parted thickish filiform processes, of which the 

 lateral adhere to the galea, the divisions simple, or sometimes two-lobed at the 

 apex. Stamens 8. Capsule oblong, slightly emarginate, glabrous, membranaceous, 

 little longer than the persistent wings. Seed cylindrical, hairy, with a smooth and 

 prominent papilliform chalaza. Caruncle unilateral, half the length of the seed, 

 narrow, two-lobed, the lobes linear. The slender stems and branches are much 

 angled : the leaves from 3 to 5 lines long, seldom half a line broad, thickish, rigid, 

 pointed. 



101. P. MACRADENiA (sp. uov.) : fruticosa, humilis, pube velutiua cinerea; ramis 

 fasciculatis adscendentibus e caule crasso procumbente usque ad apicem conferte fo- 

 liosis flexuosis ; foliis alternis parvis oblongis vel oblongo-lanceolatis obtusis muti- 

 cis subsessilibus enerviis glandulis magnis (more Tagetis) pellucido-punctatis ; flori- 

 bus solitariis extra-axillaribus breviter pedunculatis ; pedunculo ebracteolato ; ca- 

 rina imberbi nuda ; semine sericeo-villosissimo caruncula mitriformi pubescente in- 

 structo. — Hills at the head of the San Felipe ; July. Also on the Rio Grande, 

 in Southern Texas. — This well-marked species is manifestly related to the P. glan- 

 dulosa, H.B.K., which has obovate, mucronate, and minutely pubescent leaves, 

 dotted with much smaller pellucid glands than ours. The whole structure of the 

 flower and fruit accords almost exactly with the figures of Kunth, except that the 

 narrow lateral petals are not contracted below, the minute upper lobe of the stigma 

 is emarginate, the seed is more villous, and its short caruncle pubescent. As in P. 

 glandulosa, the calyx is deciduous. The capsule is ovate, emarginate, cinereous, and 

 often dotted with glands. The branches are about a span long, from a woody pro- 

 cumbent stem, thickly beset with leaves which are but two or three lines in length : 

 the glands are conspicuous on the lower surface, and appear blackish by reflected 

 light. — It belongs to the same section as the following species. 



102. P. LiNDHEiMERi {Gray, PI. Lindh. 2. j). 150): pubescens; caulibus e radice 

 incrassata lignosa rubra plurimis foliosis diffusis ; foliis alternis subsessilibus coria- 

 ceis reticulatis nitidulis cuspidatis, imis obovatis, cseteris gradatim ovatis oblongis et 

 lanceolatis ; racemis terminalibus demumve lateralibus laxifloris ; rhachi geniculato- 

 flexuosa bracteis 3 parvis ad nodes persistentibus squamosa ; pedicellis brevissimis ; 

 sepalo superiore bracteiformi a flore subdistante alls spathulatis vix dimidio brevio- 

 re; carina imberbi crista calcariformi aucta; capsula elliptica utrinque emargi- 

 nata puberula sepalo superiore persistente (cseteris deciduis) stipata ; caruncula bi- 

 calcarata semine sericeo dimidio breviore. — Rocky hills and cliffs. Western Texas 

 to the San Felipe, and south to the Rio Grande. — I have completed the specific 

 character from Mr. Wright's specimens, which have mature fruit. 



103. P. ovATiFOLiA (sp. nov.) : caulibus e basi suffrutescente diffusis velutino-pu- 

 bescentibus ; foliis late ovatis ovato-oblongisve plerisque obtusis 3 - 5-plinerviis mar- 



