Two new Lycoperdon species collected from Korea: L. albiperidium and L. subperlatum spp. nov. Author Kim, Chang Sun Forest Biodiversity Division, Korea National Arboretum, Pocheon 11186, Korea Author Jo, Jong Won Forest Biodiversity Division, Korea National Arboretum, Pocheon 11186, Korea Author Kwag, Young-Nam Forest Biodiversity Division, Korea National Arboretum, Pocheon 11186, Korea Author Sung, Gi-Ho Institute for Bio-Medical Convergence, Catholic Kwandong University, Incheon 22711, Korea Author Han, Jae-Gu Mushroom Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Eumseong 55365, Korea Author Shrestha, Bhushan Institute for Bio-Medical Convergence, Catholic Kwandong University, Incheon 22711, Korea Author Oh, Soon-Ok Forest Biodiversity Division, Korea National Arboretum, Pocheon 11186, Korea Author Kim, Sang-Yong Forest Biodiversity Division, Korea National Arboretum, Pocheon 11186, Korea Author Shin, Chang-Ho Forest Biodiversity Division, Korea National Arboretum, Pocheon 11186, Korea Author Han, Sang-Kuk Forest Biodiversity Division, Korea National Arboretum, Pocheon 11186, Korea text Phytotaxa 2016 2016-05-11 260 2 101 115 http://dx.doi.org/10.11646/phytotaxa.260.2.1 journal article 10.11646/phytotaxa.260.2.1 1179-3163 13668872 Lycoperdon ericaeum Bonord., Bot. Ztg. 15: 596 (1857) , Fig. 5 Description:—Basidiomata 15–30 mm diam., 25–30 mm high, subglobose to obpyriform, rhizomorphs attached to substrate. Exoperidium echinate or verrucae with smallish spines (less than 1 mm tall); whitish when young, becoming grayish brown to brown when old. Endoperidium pale yellow to grayish yellow, papery. Gleba yellowish to olivebrown at maturity, pulverulent. Subgleba grayish yellow to yellowish. Solitary to gregarious. Basidiospores 4.5–5.0 × 4.2–4.8 μm, length/width ratio 1.0–1.1 (n = 30), globose to subglobose, very faintly ornamented to faintly verrucose (A–B in the sense of Demoulin 1972a , b), sometimes slightly long pedicel present (<2.3 μm long), pale yellow to yellow in 3% KOH. Basidia 9.3–11.8 × 6.7–7.9 μm, length/width ratio 1.3–1.6 (n = 12), clavate, without basal clamp; usually two sterigmata, 7–17 μm long. Capillitium of Lycoperdon - type ; eucapillitial threads 2.2–3.4 μm diam., thick-walled (up to 1.2 μm), fragile to subelastic, aseptate, straight, occasional dichotomous branching, irregular pores frequently present, yellow to pale brownish in 3% KOH; paracapillitial threads present, 1.9–2.3 μm diam., thin-walled, straight to subundulate, septate, hyaline in 3% KOH. Exoperidium composed of sphaerocysts, 18–26 μm diam., thick-walled (up to 3.0 μm thick), hyaline in 3% KOH. Endoperidium composed of tightly interwoven hyphal elements, occasionally inflated elements resembling sphaerocysts, thin-walled, hyaline in 3% KOH. Habitat:—on slightly grassed terrain or needle debris. Examined specimen:— KOREA . Chungnam Province , Geumsan-gun, Mt. Jinak , coll. Han et al ., 18 July 2012 ( KA12-0761 ), deposited in KH ; Gyeongnam Province , Hamyang-gun, Mt. Gibaek , coll. Han et al ., 16 October 2013 ( KA13-1463 ), deposited in KH . FIGURE 5. Fruiting bodies and microscopic observation of Lycoperdon ericaeum . a , b. Fruiting bodies ( a . KA12-0761; b . KA13-1463). c, d. Eucapillitial threads (KA12-0761) in CL. e. Exoperidial elements (KA12-0761) in 3% KOH. f. Inflated elements in endoperidium (KA13-1463) in 3% KOH. g. Eucapillitial threads and paracapillitial threads (KA12-0761) in CL. h. Basidia and basidiosproes (KA13- 1463) in 3% KOH. i. Basidiospores (KA12-0761) in 3% KOH. Scale bars: a,b = 3 cm, c–i = 10 μm. Photos by: C.S. Kim & S-.K. Han. Comments:—Two Korean Lycoperdon specimens (KA12-0761 and KA13-1463) clustered with Japanese and Swedish L. ericaeum ITS sequences ( Fig. 1 ) and were almost identical morphologically ( Jeppson et al ., 2012 ; Kasuya et al ., 2013 ). Phylogenetically, L. ericaeum is related to L. rupicola Jeppson, E. Larss. & M.P. Martín and L. subumbrinum Jeppson & E. Larss. , but is distinguishable by the presence of fragile eucapillitial threads ( Table 2 ).