Page:The Botany of the Antarctic Voyage.djvu/298

266 usque pinnatifidis v. 3-5-partitis laciniis omnibus linearibus obtusis rnarginibus recurvis supra glaberrimis nitidis subtus sericeis, pedunculis villosis subscapiformibus parce foliosis, floribus plerisque in capitulum globosum congestis, calyce liirsuto, petalis fusco-purpureis dorso sericeis, staminibus 2 filamentis brevibus, stigmate depresso fimbriate, fructu tetragono glabriusculo supra medium spinis suberectis apice glochidiatis basi dilatatis annate.

Hab. Strait of Magalliaens ; Port Gregory; Copt. King.

Radix lignosa, descendens. Caules 2-3-unciales, vaginis pilosis foliorum tecti. Folia 3-5 unc. longa, petiolis graeilibus subsericeis ; foliolis perplurimis, magnitudine variis, 2 lin. ad i unc. longis. Pedunculi pedales, validi, erecti, foliis 2-3 abbreviatis instructi. Flores parvi.

This species is so nearly allied in general habit to some states of A. pinnatifida, that I hesitated before separating them. That plant I find to differ in having the surface of the fruit invariably armed with many and much larger spines. The A. pinnatifida also is a native of Patagonia, having been found by Mr. Darwin at Port Desire, in fruit only, and his specimens are of a much smaller size than those from Chili, but not otherwise distinct. The present species connects the Fuaccena with the Ancistrum group, and is, too, the most nearly allied to the following, which, possessing no spines, seta;, or glochidise whatever, will not rank under either of those subgenera.

4. Acjena lucida, Vabl; laxe pilosa, caule elongate decumbente ramoso, ramis plurimis ascendentibus foliosis, foliolis parvis 5-9-partitis laciniis insequalibus lineari-oblongis obtusis marginibus revolutis supra glaberrimis subtus laxe patentim pilosis uninerviis, pedunculis scapiformibus breviusculis validis, floribus plerisque in capitulum globosum aggregates paucis solitariis fascicidatisve, bracteolis scariosis ciliatis, petalis dorso barbatis, staminibus plerumque 2 filamentis brevibus, stigmate depresso patellseformi, fructu tetragono ad angidos superne tuberculato, sjnnis glocbidiisve nullis. A. lucida, Vahl, Erium. vol. i. p. 296. Lamarck, JUmt. vol. i. t. 22. f. 3. Encycl. vol. i. p. 346. Sort. Kew. vol. i. p. 67. DC. Prodr. vol. ii. p. 593. (Tab. XCIV.)

Hab. Falkland Islands ; very abundant on rocks near the sea.

Caides elongati, 6 unc. ad pedalem, prostrati, curvati, crassitie pennae anserinae, vestigiis petiolorura delapsoruni vaginati, apicibus ascendentibus. Folia ad apices ramorum conferta, 1-2-polliearia ; petiob basi late vaginantes, vaginas margine ciliata ; foliola pro genere minima, 1 lin. longa, pallide viridia, ad basin in lacinias 3-4 fissa, plus minusve patentim pubescentia, apicibus interdum penicillatis. Pedunculi 3 unc. longi. Capitula villosa, unc. diametro. Flores 1 lin. longi. Fructits obovatus, sursum pilosus, angulis prominentibus.

A plant long known in cultivation in England, but very imperfectly described. I am not aware by whom it was first detected. Vahl describes it from a specimen in the Jussieuan herbarium, and states that he saw it growing in Dr. Pitcaini's garden near London, where the fruit was unarmed; this is always the case in native specimens, though Vahl asserts the contrary. It is not improbable that some of the varieties of A. trifida, from Patagonia, may have been mistaken for this.

Plate XCIV. Fig. 1, bracteola; jig. 2, fiower; jig. 3, the same, more advanced; jig. 4, longitudinal section of the same, showing the carpel, enclosed in the calyx ; fig. 5, section of ripe fruit and carpel, showing the suspended seed; jig. 6, side, and fig. 7, front view of seed; fig. 8, embryo removed from seed: — all magnified.

5. Acena (Ancistrum) Icevigata, Ait. ; glabriuscula, caule decumbente ramoso, ramis ascendentibus foliosis, foliolis suboppositis oblongo-obovatis obtusis basi obliquis superne grosse crenato-dentatis coriaceis supra glaberrimis subtus parce pilosis, pedunculo scapiformi glaberrimo v. pubescente nudo v. basi folioso superne interdum diviso, floribus plerisque capitatis, calycibus glabris, staminibus 2 filamentis brevibus autheris ro-