UNI 



OR, BOTANICAL DICTIONARY. 



UNX 



777 



nous, tubular, simple, bluntish, brown, finely reticulated; 

 seeds in little patches. Found in Bantry Bay, and on the 

 Suffolk coast. 



26. Ulva Rugosa; Corrugated Cape Laver. Frond mem- 

 branous, tubular, branched, corrugated, tuberculated. dark 

 brown ; branches two-ranked, bursting at the extremity. 

 Found in the sea, near the Cape. 



*** Frond fleshy, solid. 



27. Ulva Diaphana; Transparent Fleshy Laver. Frond 

 gelatinous, solid, tumid, pellucid, roundish or compressed, 

 with numerous irregular branches. It has been supposed to 

 be an animal substance, but evidently belongs to this genus 

 hy the distribution of what appears to be the seeds. It ex- 

 actly resembles wet sea-sand in colour. Found on the sea- 

 coast of Great- Britain. 



28. Ulva Defracta; Broken Laver. Frond thread-shaped, 

 solid, unbranched, elastic, viscid, pellucid, with pale red 

 dots. Found on the beach at Weymouth, and upon the 

 east coast of Scotland. 



29. Ulva Filiformis ; Thread-shaped Laver. Frond gela- 

 tinous, thread-shaped, much branched, purplish : branches 

 scattered, distant, very long. Annual. Native of subma- 

 rine rocks and stones near Christchurch, Hampshire. 



30. Ulva Capillaris ; Capillary Laver. Frond gelatinous, 

 thread-shaped, much branched, pale; branches alternate, ca- 

 pillary, acute. Annual; from May to October. Found near 

 Christchurch in Hampshire, as well as at Margate. 



31. Ulva Rubens; Reddish Short-branched Laver. Frond 

 gelatinous, thread-shaped, equal, reddish or greenish, much 

 branched; branches scattered, horizontal, obtuse. Annual. 

 Found in Portland island, and near Pool in Dorsetshire, 

 upon submarine rocks and stones. 



32. UlvaRubra; Crimson Laver. Frond gelatinous, much 

 branched, forked, thread-shaped, unequal, somewhat flat- 

 tened, bright red, smooth. Found near Christchurch, and 

 also on the coast at Scarborough, in August. 



33. Ulva Plumosa; Feathered Green Laver. Frond gela- 

 tinous, green, thread-shaped, compressed, branched ; branches 

 pinnate, with numerous parallel, linear, shining segments. 

 Found on the coasts of Sussex and Devonshire. 



34. Ulva Protuberans ; Prominent-seeded Laver. Frond 

 gelatinous, thick, angular, green; seeds elliptical, at length 

 prominent and deciduous. This singular production is a 

 collection of thick, fleshy, juicy, angular or wrinkled, obtuse 

 lobes, about half an inch high, of a light pellucid grass-green. 

 Found growing among moss, on wet shady parts of the 

 sand-rocks, at Uckfield, in Sussex. 



Umbrella Tree. See Magnolia. 



Uncaria; a genus of the class Pentandria, order Mono- 

 gynia. ESSENTIAL CHARACTER. Corolla : salver-shaped. 

 Germen : crowned with a gland. Stigma : two-grooved. 

 Pericarp : two-celled, many-seeded. This genus is merged 

 in Naudea. The species are, 



1. Uncaria Inermis. Leaves oblong, ovate, acuminate; 

 stem unarmed. This very much resembles Nauclea Parvi- 

 flora, from which it differs in having the leaves more ovate 

 and acuminate. Native of Guiana. 



2. Uncaria Aculeata. 

 Native of Guiana. 



Uniola; a genus of the class Triandria, order Digynia. 

 GENERIC CHARACTER. Calix : glume many-flowered, 

 many-valved ; valves imbricate in a double row, awl-shaped, 

 compressed, navicular, keeled, one closed over the other; 

 the last pair many-flowered, containing an ovate flatted spike- 

 let; sharp at the edge. Corolla: two-valved ; valves lance- 

 olate, compressed, like those of the calix ; the inner valve 



Leaves ovate, acute ; stem prickly. 



surpassing the other a little. Stamina : filamenta three, 

 capillary ; antherse oblong, linear. Pistil: germen conical ; 

 styles two, erect, simple ; stigmas pubescent. Pericarp : 

 none; the corolla encloses the seed. Seeds: one, ovate- 

 oblong. ESSENTIAL CHARACTER. Calix : many-valved. 

 Spikelet: ovate, keeled. The species are, 



1. Uniola Paniculata; Panicled Spike Grass. Panicled : 

 spikelets ovate. It is one of the largest and most magnifi- 

 cent grasses; the culm rising from four to six feet, round, 

 jointed, smooth, leafy in the lower part, and terminating in 

 a spreading panicle eighteen inches long. Known by the 

 name of Sea-side Oat in Virginia and Carolina, where it is a 

 native. 



2. Uniola Mucronata. Spike distich ; spikelets ovate ; 

 calices somewhat awned. Culm a foot high, even ; flowers 

 containing seven florets. Native of the East Indies. 



3. Uniola Spicata. Subspiked : leaves rolled in, rigid. 

 Culm a span high; panicle very small, squeezed so close 

 that there is scarcely any sign of pedicels, all directed one 

 way. Found on the coast of North America. 



4. Uniola Latifolia. Panicle lax ; all the spikelets with 

 long pedicels; calix trivalve ; flowers monandrous, subfal- 

 cate at the keel, pilose; leaves wide, plane. A very hand- 

 some grass. Grows on the Allegany mountains, in shady 

 woods, among rocks. 



Unona; a genus of the class Polyandria, order Polygynia. 

 GENERIC CHARACTER. Calix : perianth three-leaved, 

 very small, acute, pressed close. Corolla : petals six, lan- 

 ceolate, sessile, gibbous at the base on the outside, at the 

 same time excavated within into the shape of a pitcher. 

 Stamina : filamenta none ; antherse very numerous, oblong, 

 collected into a ball, within the pitcher of the corolla. Pis- 

 til: germen many, sessile; styles about ten, bristle shaped, 

 approximating, rather longer than the antherse. Pericarp : 

 berries many, pedicelled, ovate, gibbous, jointed like a neck- 

 lace. Seeds: two or. three, ovate, smooth, one above the 

 other. ESSENTIAL CHARACTER. Calix : three-leaved. 

 Petals: six. Berries: two or three seeded, jointed like a 

 necklace. The species are, 



1. Unona Discreta. Leaves lanceolate, silky beneath. 

 This is a tree, with narrow wandlike branches, which are 

 pubescent. It has the flower of Unona, but the fruit is 

 different, purple, sapid, aromatic, which distinguishes the 

 genus, as in Theobroma and Abroma. Native of Surinam, 

 where it is called Peyricaboom. 



2. Unona Tomentosa. Leaves lanceolate, tomentose. 

 Stem upright, five feet high, sending out weak reclining 

 branches ; -flowers yellow-green, terminating, solitary, hang- 

 ing down by a very long peduncle. Loureiro called it Des- 

 mos, from the berries being joined like the links of a chain. 

 Native of Cochin-china. 



3. Unona Discolor. Leaves ovate-oblong, smooth on both 

 sides ; branches round, purple, smooth, scarcely villose at 

 the end. Native of the East Indies. 



4. Unona Concolor. Leaves oblong-acuminate, smooth 

 on both sides, concolor ; peduncles two-flowered. Native of 

 Guiana. 



Unxia; a genus of the class Syngenesia, order Polygamia 

 Necessaria. GENERIC CHARACTER. Calix : common 

 roundish, five-leaved ; leaflets ovate. Corolla : compound 

 radiate; ray indistinct; corollets hermaphrodite, five in the 

 disk; females, as many in the ray: proper to the herma- 

 phrodites, funnel-form, five-cleft; to the females, ovate, small. 

 Stamina : in the hermaphrodites, filamenta five ; anthers*; 

 cylindric, tubular. Pistil : to each ; germen ovate ; style 

 simple; stigma bifid. Pericarp: none; calix unchanged. 



