Planothidium engelbrechtii (CHOLNOKY) ROUND & BUKHTIYAROVA: Identity and lectotypification (Bacillariophyta).

Lectotypification, emended description and distribution of Planothidium distinctum (Achnanthidiaceae, Bacillariophyceae)

The rare boreo-alpine, oligotraphenic diatom Planothidium distinctum (= Achnanthes distincta) was first described from the western Alps in 1954. Achnanthes hirta, a species described in 1970 from the Pyrenees, is regarded as a heterotypic synonym of Planothidium distinctum but almost all morphological details of P. distinctum are known from the type material of Achnanthes hirta. On the basis of...

Equifax and the Latest Round of Identity Theft Roulette

Lectotypification of Linnaean names in Pedicularis (Orobanchaceae)

Ten Linnaean names of Pedicularis (Orobanchaceae) are lectotypified: P. comosa, P. flammea, P. hirsuta, P. incarnata, P. lapponica, P. resupinata, P. rostrata, P. tristis, P. tuberosa and P. verticillata. Lectotypes are designated from the Linnaean herbarium at LINN. The type choices made here maintain the present usage of the corresponding Linnaean names for ten Pedicularis species.

Gametogenesis and Auxospore Development in Actinocyclus (Bacillariophyta)

cGametogenesis and auxospore development have been studied in detail in surprisingly few centric diatoms. We studied the development of sperm, eggs and auxospores in Actinocyclus sp., a radially symmetrical freshwater diatom collected from Japan, using LM and electron microscopy of living cultures and thin sections. Actinocyclus represents a deep branch of the 'radial centric' diatoms and shoul...

One-round identity-based key exchange with Perfect Forward Security

a r t i c l e i n f o a b s t r a c t Identity-based authenticated key exchange (IBAKE) protocol is one of the most important cryptographic primitives that enables two parties using their identities to establish their common secret keys without sending and verifying public key certificates. Recently, many works have been dedicated to design efficient and secure IBAKE protocols without bilinear ...