Eugenia mouensis Baker f.

Snow, Neil, Dawson, John W., Munzinger, Jérôme & Callmander, Martin W., 2022, Additional taxonomic and nomenclatural notes on New Caledonian Eugenia (Myrtaceae), Candollea 77 (1), pp. 71-79 : 76-77

Eugenia mouensis Baker f. in J. Linn. Soc. Bot. 45: 313. 1921.

Holotypus: NEW CALEDONIA. Prov. Sud: Mt. Mou, c. 180 m, 13.III.1914, fl., Compton 554 ( BM [ BM000053518 ]!) .

= Jambosa canalensis Guillaumin in Bull. Soc. Bot. France, sér. 5, 85: 642. 1939. Lectotypus (designated here): NEW CALEDONIA. Prov. Nord: Canala , 1872, fr., Balansa 3402 (P [ P00500670 ]!; isolecto-: P [ P00696295 , P06670064 ]!).

Notes. – Three sheets of the original material of Jambosa canalensis Guillaumin are deposited at P and none are indicated as “type” in Guillaumin’s hand. The best-preserved material of Balansa 3402 [ P00500670 ] with abundant fruiting material is designated here as the lectotype .

Of particular note, however, is P06670064, which shows two distinct classes of leaf sizes on the same branchlet. The specimen has shorter and narrower leaves proximally and distinctly longer and broader leaves distally. This specimen was critical in assessing Dawson’s unpublished manuscript name “ Eugenia povilaensis”, which he had intended to describe based in part on shorter leaves, and which he indicated as being “probably closest to E. mouensis ”. So, as currently understood, Eugenia mouensis Baker f. can have leaves of variable length, and that “ Eugenia povilaensis” will not be recognized as being distinct.

Jambosa canalensis has been considered as a synonym of Eugenia mouensis by GOVAERTS et al. (2008) and this synonymy is followed here.

Eugenia ovigera Brongn. & Gris in Bull. Soc. Bot. France, sér. 2, 12: 179. 1865.

 Calycorectes ovigera (Brongn. & Gris) Guillaumin in Bull. Mus. Natl. Hist. Nat. 25: 503. 1919.  Stereocaryum ovigerum (Brongn. & Gris) Burret in Notizbl. Bot. Gart. Berlin-Dahlem 15: 547. 1941.

Lectotypus (designated by SNOW et al., 2016a: 78): NEW CALEDONIA. Prov. Sud: bord de la Rivière d’Unia, 1855–1860, fr., Vieillard 473 ( P [ P00402692 ]!; isolecto-: P [ P00402773 , P00402774 ]!) .

= Schizocalyx neocaledonica Brongn. & Gris in Ann. Sci. Nat. Bot., sér. 5, 13: 382. 1871.  Stereocaryum neocaledonicum (Brongn. & Gris) A.J. Scott in Kew Bull. 34: 496. 1980, syn. nov. Lectotypus (first step designated by SCOTT, 1980: 486; second-step designated here): NEW CALEDONIA. Prov. Nord: vallée du mouillage, Ile Tanlé , 1861–1867, fl., Deplanche 360 (P [ P00637570 ]!; isolecto-: K [ K000821587 , K000821588 ] image!, P [ P00402701 , P02428352 ]!). Syntypus: sine loco, 1870, fl. & fr., Pancher s.n. (P [ P00637571 ]!).

Notes. – SCOTT’s (1980) mention of Deplanche 360 in P as the holotype effectively lectotypified the name. However, a second-step is needed given that three sheets are deposited in P. The best-preserved material of Deplanche 360 [P00637570] is designated here as the second-step lectotype.

Dawson (unpubl. data) indicated that material previously described as Stereocaryum neocaledonicum (Brongn. & Gris) A.J. Scott , from northwestern New Caledonia on or near Île Tanlé, might be a distinct taxon, given somewhat larger leaves and flowers on average than those of Eugenia ovigera Brongn. & Gris. However , in comparing the range of variation of those few specimens with the more widely-ranging E. ovigera , it appears the latter can easily accommodate specimens previously determined as Stereocaryum neocaledonicum .

Eugenia paludosa Pancher ex Brongn. & Gris in Bull. Soc. Bot. France, sér. 2, 12: 178. 1865.

Lectotypus (designated here): NEW CALEDONIA. Prov. Nord: Balade, 1855– 1860, bud & fl., Vieillard 479 ( P [ P05094122 ]!) .

Notes. – BRONGNIART & GRIS (1865: 178) cited two syntypes in the protologue: Vieillard 479 and Pancher s.n. [anno 1861] . A single specimen of Vieillard 479 is desposited in P and designated here as the lectotype. The Pancher collections from Kanala deposited in P [ P06670065 , P06670066 , P05094125 ] are excluded and otherwise identified as Eugenia mouensis .

Dawson (unpubl. data) considered Eugenia pachychremastra Guillaumin to be conspecific with E. paludosa Pancher ex Brongn. & Gris , but we are maintaining them as distinct pending further study.

Eugenia poimbailensis (Guillaumin) J.W. Dawson & N. Snow in Candollea 71: 79. 2016 ( Fig. 3A ).

 Myrtus poimbailensis Guillaumin in Bull. Soc. Bot. France, sér. 5, 85: 633. 1939.  Austromyrtus poimbailensis (Guillaumin) Burret in Notizbl. Bot. Gart. BerlinDahlem 15: 505. 1941.

Lectotypus (designated here): NEW CALEDONIA. Prov. Nord: Poinbail à Wagap, 1861– 1867, fr., Vieillard 2605 ( P [ P00632556 ]!; isolecto-: K [ K000800515 ]!, P [ P06670055 ]!) .

Notes. – SNOW et al. (2016a: 79) considered the sheet P00632556 as the holotype. However, two sheets of Vieillard 2605 are deposited in P and this is rectified here with the designation of a lectotype on P00632556 , which also has fruiting material .

Eugenia poimbailensis (Guillaumin) J.W. Dawson & N. Snow is characterized by its sprawling, densely branching shrubby habit, leaf blades <2 cm long having faintly visible secondary veins below, its glabrous hypanthium, and sessile white flowers.

Figures

Fig. 3. – A. Eugenia poimbailensis Guillaumin (Tipindjé, 19.XI.2011); B. Eugenia pubiflora N. Snow & Callm. (Bois du Sud, 19.XII.2018). [Photo: H. Vandrot]