V. 



PLANT^ WRIGHTIAN.E. 



29 



in that of M. Boissier). On the other hand, the ripe fruits of the specimens in the 

 Hookerian herharium (viz. that of Cumings, No. 274, from the Andcs of Chili, and 

 that of Bridges from Llayllay) show a nearly straight cmbryo, the radicle bcing 

 slightly bent, andwith the edges of the broad and flat cotylcdons dirccted to the axis 

 of the fruit. I therefore join our species to Porliera without hesitation. But the 

 Guaiacum arboreum, DC, judging from the detailcd description of Kunth, cannot 



G. parvifolium, Planchon in herh. Hook. (Aiidrieux FL 

 Mexic. No. 475), has similar narrow leaflets, but has esquamulatc filaments, and ap- 

 pears to be, like G. Guatemalense, Planchon in herh. IIooA'.^ a true Guaiacum, The 

 plant figured as G, sanctum in Gen. IIK 2. t 148 (G. Sloanei, Shuttleivorfh^ Ph i?w- 

 gel^ no. 68, 69) is no doubt G. verticale of Ortcga; but it has pubescent branch- 

 lets ; and I know not whether it is distinct from the Linnean G. sanctum. 



belong to the same genus. 



At3 



f 



a^ 



/ 



/A^ 



COCIILOSPERME^. 



Euryanthe Scheideana, Cham. ^ Schlecht. in Linna^a, 5. p. 225. (Tab. III. B.) ^K 4^/*^ J??T -^^ 



79. Amoreuxta Scheidiana, Planch. in Hooh Lomh Joiu\ Bot. 6. ^?, 140. t. 1. 



Prairies near the San Pedro River, July ; mostly in fruit, " Flowcrs ycllow." 

 Also near Monterey, Northern Mexico, Dr. Gregg^ Dr. Edwards, — This bcautiful 

 and highly remarkable plant has a know^n geographical range from the Avestcrn 

 borders of Texas to New Granada. As the peduncles are often by abortion one- 

 flowered, I should without hesitation refer it to the original Amoreuxia pahnatifida 

 of De Candolle, exccpt that the fiowers of thc Mo^inian plant are said to be " ru- 

 belli." The fruit having now for the first time come to hand, I am able to give a 

 figure of it, and to complete Planchon's new character of the genus, which in all 

 other respects leaves nothing to be desired.* 



Capsula pendula, ovoidea (bipollicaria), trilocularis, 6-vaIvis ; valvis coriaceis ab 

 endocarpis et dissepimentis scariosis tenuissimis, axi centrali persistente adnatis, se- 

 cedentibus ; loculis polyspermis. Semina placenta^ centrali incrassatae affixa, obo- 

 voideo-rotundata, breviter anatropa: integumentum exterius tenue membranaceum, 

 laxum, fragile, arilliforme, facie ventrali raphi brevi prominente percursum, hilo par- 

 vo notatum, ab integumento interiori osseo nitido leviter reniformi omnino solutum. 

 Embryo in axi albuminis dense carnosi sigmoideo-biarcuatus, ejusdem fere longitu- 

 dine ; cotyledonibus foliaceis subflexuosis ; radicula crassissima brevi, hilo proxima. 



» r* 



RUTACEiE. 



80. RuTosMA Texanum, Grag^ Gen. IIL 2. p. 144, t 155, 4" P^* Lindh. 2. p. 158. 



* Whether the A. Scheideana be different from A. palmatifida, DC^ or not, there can be no doubt that 

 an incomplctc specimen, characterized below, belongs to a species quite distinct from either. 



Amoreuxia malvjEFOLIA (sp, nov.) : foliis orbiculatis sublobatis, lobis (7) truncatis, costis subtus 

 cum pedunculis calycibusque tomentulosis ; staminibus vix ina^quilongis. — Northem Mcxico, nearChihua- 

 hua. The imperfect specimen, in flower only, was gathered by an unknown, and apparently unscientific 

 collector, and sent, with other plants, to Mr. Scheer of Kew, and by him presented to Sir Willlam Hook- 

 er, who has kindly permltted me to characterize the species, The flowers are about as large as those of 

 A. Scbeideana, and accord with thcm in all essential particulars, except that ihe stamens are less uncqual. 

 The leaves may be compared with those of Malva roUmdifolia, and are scarcely more deeply lobed tlian they. 



VOL. TII, ART. 6. 



5. 



