ASCLEPIADACEiE. 401 



8. ECHlTES, P. Browne. P. 84, before E. Andrewsii, add : — 



B. paludosa, Vaiil. Habit of the succeeding : peduncle elongated, 1-3-flowered : corolla 

 white, 2 inches long or more ; tube slender, as long as the obconieal-campahulate throat, 

 about thrice the length of the oblong and mucronate spreading calyx-lobes : anthers oblong- 

 lanceolate, acuminate, not appendaged : beak of the seeds plumose to the base. — Eel. Am. 

 ii. 19, & Ic. t. 5 ; Griseb. Fl. W. Ind. 415. Rhahdadenia paludosa, Muell. Arg. — Mangrove 

 swamps, S. Florida, Chapman (published in Bot. Gazette as E. biflora), Garber, Curtiss. 



ASCLEPIADACE^. 



The synoptical characters of the genera, on p. 85 and p. 87, to be augmented 

 as follows : — 



5. ASCLEPIODORA. To character of hoods, add : At the sinuses between them are 

 auriculate lobes, alternate with the anthers, simulating an inner corona. 



14 1 . ROTHROCKIA. Corolla rotate, deeply 5-cleft ; the lobes oblong, dextrorsely over- 

 lapping in the bud. Crown simple, inserted at the junction of corolla and stamen-tube, 

 5-parted ; the lobes opposite the anthers, thick, slightly cuneate, barely concave. Anthers 

 short : pollinia oval, affixed just below their apex to a short caudicle, pendulous. Stigma 

 abruptly produced from the top into a column having a 3-crested apex ; namely, two divari- 

 cate and. muricate-papillose crests, with a smaE central emarginate crest interposed. 



14 2 . HIMANTOSTEMMA. (In Tribe Gonolobea 1) Corolla deeply 5-parted, soon re- 

 flexed, the broadly lanceolate lobes slightly overlapping dextrorsely, the face (especially 

 toward the base) conspicuously adorned with spatulato and stipitate corolline processes, dis- 

 posed without order. Crown stamineal, borne on the summit of the short column, simple, 

 with membranaceous margin bearing 10 elongated narrowly linear and stipitate liguliform 

 divisions, which are geminately alternate with the anthers and nearly equal the .unex- 

 panded corolla; also 5 subulate and short processes, which are opposite the anthers. 

 Anthers short, inappendiculate in the manner of Gonolobem, applied to the sinuses of the 

 somewhat dilated and flat-topped stigma : cells opening at summit. Pollinia oval, affixed 

 by the pellucid apex to a very short caudicle, introrsely somewhat pendulous. Follicles 

 echinate. 



14 3 . LACHNOSTOMA. Corolla between rotate and salverform, with tube about the 

 length of the (in bud) dextrorsely convolute lobes, retrorsely villous-barbate in the throat. 

 Crown belonging to the corolla, adnate to its tube, with free margin 5-10-crenate or 

 lobed. Otherwise near Gonolobus. 



6. ASCLEPIAS, L. 



A - Cornlxti, Decaisne, p. 91. — A. grandifolia, Bertol. Misc. Bot. xii. 47, t. 3, 4, 5, raised 

 from seed from North America, by its flowers and follicles can be no other than this com- 

 mon Milkweed. Pods in this species are sometimes found with hardly a trace of the soft 

 spinous processes, sometimes with very long and shaggy ones. 



A. obtusifolia, Michx., p. 91, occasionally bears a second umbel at the base of the long 

 terminal peduncle. 



A. Meadii, Torr., p. 91, has leaves undulate in the living plant, the upper sometimes 

 broadly ovate and subcordate : umbel nodding on the peduncle. 



A. glaueescens, HBK., p. 92.-^4. data, Benth. PI. Hartw. 290, is not different. — S. 

 Arizona, Lemmon, Pringle. 



A. brachyst^phana, Exgelm., p. 94. To this belongs Asclepiodora circinat.is, Fournier 

 in Ann. Sci. Nat. ser. 6, xiv. 369, as to Palmer's 815, & "Watson, Proc. Am. Acad. xi. 114, 

 excl. syn. Acerates circinalis, Decaisne. — Between this and the next add : — 



A. uncialis, Greene. Intermediate between the preceding and the following, dwarf and 

 depressed, glabrate : leaves linear-lanceolate, or small lowest ones ovate : umbel sessile, few- 



25 



