I think that the vowel quantity is more important than the stress. But then my own language distinguishes phonemic vowel quantity, as did Classical Latin. Speakers of languages that do not have phonemic vowel quantity often recognise and hear only the stress and do not care about vowel quantity.
I listened to most of those, and they all pronounced the name as if it were English, which it is not. (Some scientific names, such as Geranium, have been borrowed into English; others, such as Crash bandicoot, were borrowed from English.) Once I reconnect my microphone (and probably get a new headset, as both ear sponge-rings have lost their covers), how can I record a pronunciation and mark it as Latin?
GoogleTranslate https://translate.google.com/ also thinks it is spanish.
It is may not perfect but may iNat should add this AI speech button to the taxon site, so the google robo can speak it out loud.
It can try to recognize the language by it self or you can specify the language your self and even latin, and then you get a button to listen to this robot.
If you click on the translated words you even get some variants which may fit better.
https://translate.google.com/?sl=auto&tl=la&text=Castilleja&op=translate
https://www.howtopronounce.com/latin/cerastium-arvense
The first is correct but was either said by a computer or made by splicing phonemes. At least several others are said in English.
The list of languages does not include Translingual. That leaves unanswered the question of how to tag names like Winteraceae (magnoliid plant family), nghetinhensis (species epithet of the saola), and Galegeeska (a sengi). I have no trouble pronouncing Winteraceae (I just switch accents in the middle of the word), but I don’t speak Vietnamese or Somali, so do my best guess on the other two.
Once I had a tour of the largest grower and seller of Kalanchoe blossfeldiana, and I can’t remember how their representative pronounced it but it was odd enough to make everyone in my group remark later “I know there’s several ways to say it but I never thought of that way!'“
I found a name where “notus” doesn’t mean “south” or “back”. It’s Inonotus, which is a fungus. Wikipedia, citing a page that used to be at messiah.edu, says “The name comes from ino meaning fibrous and ot meaning ear.” Those would be Greek ις (sinew) and ους (ear), with stems ιν- and ωτ-. The second n is irregular, but can be explained by using the genitive plural ινων. The ι in ινων is long, so the name is Īnōnōtus, pronounced /i:no:'no:tus/.
https://www.youtube.com/watch?v=niRagjy2teo
This Italian pronounces and declines Taraxacum and Plantago. She missed Ocimum though.